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Overview
Comment: | Merge the json branch into trunk. Json is disabled by default for now. Use the --enable-json option to configure, or set FOSSIL_ENABLE_JSON in the makefile to turn json processing on. |
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Downloads: | Tarball | ZIP archive | SQL archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: | 796dcfe0728bb2bc865db84e50432f0205d1d2fd |
User & Date: | drh 2011-11-04 20:57:52 |
Original Comment: | Merge the json branch into trunk. Json is disabled by default for now. Use the --json option to configure, or set FOSSIL_ENABLE_JSON in the makefile to turn json processing on. |
Context
2011-11-05
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00:10 | updated from jquery 1.4.x to 1.6.x. check-in: 2128ecdd user: stephan tags: trunk | |
2011-11-04
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21:57 | Replace the TH1 interpreter with Jim Tcl. check-in: 863e789e user: steveb tags: jimtcl | |
20:57 | Merge the json branch into trunk. Json is disabled by default for now. Use the --enable-json option to configure, or set FOSSIL_ENABLE_JSON in the makefile to turn json processing on. check-in: 796dcfe0 user: drh tags: trunk | |
20:48 | Added missing #ifdefs for json mode. Closed-Leaf check-in: 8a4e81cf user: json-demo tags: json-multitag-test, json | |
20:05 | Add the BSD copyright notice to the top of the th_tcl.c source file. check-in: bf1ebbe1 user: drh tags: trunk | |
Changes
Added ajax/README.
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This is the README for how to set up the Fossil/JSON test web page under Apache on Unix systems. This is only intended only for Fossil/JSON developers/tinkerers: First, copy cgi-bin/fossil-json.cgi.example to cgi-bin/fossil-json.cgi. Edit it and correct the paths to the fossil binary and the repo you want to serve. Make it executable. MAKE SURE that the fossil repo you use is world-writable OR that your Web/CGI server is set up to run as the user ID of the owner of the fossil file. ALSO: the DIRECTORY CONTAINING the repo file must be writable by the CGI process. Next, set up an apache vhost entry. Mine looks like: <VirtualHost *:80> ServerAlias fjson ScriptAlias /cgi-bin/ /home/stephan/cvs/fossil/fossil-json/ajax/cgi-bin/ DocumentRoot /home/stephan/cvs/fossil/fossil-json/ajax </VirtualHost> Now add your preferred vhost name (fjson in the above example) to /etc/hosts: 127.0.0.1 ...other aliases... fjson Restart your Apache. Now visit: http://fjson/ that will show the test/demo page. If it doesn't, edit index.html and make sure that: WhAjaj.Connector.options.ajax.url = ...; points to your CGI script. In theory you can also do this over fossil standalone server mode, but i haven't yet tested that particular test page in that mode. |
Added ajax/cgi-bin/fossil-json.cgi.example.
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#!/path/to/fossil/binary repository: /path/to/repo.fsl |
Added ajax/i-test/rhino-shell.js.
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var FShell = { serverUrl: 'http://localhost:8080' //'http://fjson/cgi-bin/fossil-json.cgi' //'http://192.168.1.62:8080' //'http://fossil.wanderinghorse.net/repos/fossil-json-java/index.cgi' , verbose:false, prompt:"fossil shell > ", wiki:{}, consol:java.lang.System.console(), v:function(msg){ if(this.verbose){ print("VERBOSE: "+msg); } } }; (function bootstrap() { var srcdir = '../js/'; var includes = [srcdir+'json2.js', srcdir+'whajaj.js', srcdir+'fossil-ajaj.js' ]; for( var i in includes ) { load(includes[i]); } WhAjaj.Connector.prototype.sendImpl = WhAjaj.Connector.sendImpls.rhino; FShell.fossil = new FossilAjaj({ asynchronous:false, /* rhino-based impl doesn't support async. */ timeout:10000, url:FShell.serverUrl }); print("Server: "+FShell.serverUrl); var cb = FShell.fossil.ajaj.callbacks; cb.beforeSend = function(req,opt){ if(!FShell.verbose) return; print("SENDING REQUEST: AJAJ options="+JSON.stringify(opt)); if(req) print("Request envelope="+WhAjaj.stringify(req)); }; cb.afterSend = function(req,opt){ //if(!FShell.verbose) return; //print("REQUEST RETURNED: opt="+JSON.stringify(opt)); //if(req) print("Request="+WhAjaj.stringify(req)); }; cb.onError = function(req,opt){ //if(!FShell.verbose) return; print("ERROR: "+WhAjaj.stringify(opt)); }; cb.onResponse = function(resp,req){ if(!FShell.verbose) return; if(resp && resp.resultCode){ print("Response contains error info: "+resp.resultCode+": "+resp.resultText); } print("GOT RESPONSE: "+(('string'===typeof resp) ? resp : WhAjaj.stringify(resp))); }; FShell.fossil.HAI({ onResponse:function(resp,opt){ assertResponseOK(resp); } }); })(); /** Throws an exception of cond is a falsy value. */ function assert(cond, descr){ descr = descr || "Undescribed condition."; if(!cond){ throw new Error("Assertion failed: "+descr); }else{ //print("Assertion OK: "+descr); } } /** Convenience form of FShell.fossil.sendCommand(command,payload,ajajOpt). */ function send(command,payload, ajajOpt){ FShell.fossil.sendCommand(command,payload,ajajOpt); } /** Asserts that resp is-a Object, resp.fossil is-a string, and !resp.resultCode. */ function assertResponseOK(resp){ assert('object' === typeof resp,'Response is-a object.'); assert( 'string' === typeof resp.fossil, 'Response contains fossil property.'); assert( !resp.resultCode, 'resp.resultCode='+resp.resultCode); } /** Asserts that resp is-a Object, resp.fossil is-a string, and resp.resultCode is a truthy value. If expectCode is set then it also asserts that (resp.resultCode=='FOSSIL-'+expectCode). */ function assertResponseError(resp,expectCode){ assert('object' === typeof resp,'Response is-a object.'); assert( 'string' === typeof resp.fossil, 'Response contains fossil property.'); assert( resp.resultCode, 'resp.resultCode='+resp.resultCode); if(expectCode){ assert( 'FOSSIL-'+expectCode == resp.resultCode, 'Expecting result code '+expectCode ); } } FShell.readline = (typeof readline === 'function') ? (readline) : (function() { importPackage(java.io); importPackage(java.lang); var stdin = new BufferedReader(new InputStreamReader(System['in'])); var self = this; return function(prompt) { if(prompt) print(prompt); var x = stdin.readLine(); return null===x ? x : String(x) /*convert to JS string!*/; }; }()); FShell.dispatchLine = function(line){ var av = line.split(' '); // FIXME: to shell-like tokenization. Too tired! var cmd = av[0]; var key, h; if('/' == cmd[0]) key = '/'; else key = this.commandAliases[cmd]; if(!key) key = cmd; h = this.commandHandlers[key]; if(!h){ print("Command not known: "+cmd +" ("+key+")"); }else if(!WhAjaj.isFunction(h)){ print("Not a function: "+key); } else{ print("Sending ["+key+"] command... "); try{h(av);} catch(e){ print("EXCEPTION: "+e); } } }; FShell.onResponseDefault = function(callback){ return function(resp,req){ assertResponseOK(resp); print("Payload: "+(resp.payload ? WhAjaj.stringify(resp.payload) : "none")); if(WhAjaj.isFunction(callback)){ callback(resp,req); } }; }; FShell.commandHandlers = { "?":function(args){ var k; print("Available commands...\n"); var o = FShell.commandHandlers; for(k in o){ if(! o.hasOwnProperty(k)) continue; print("\t"+k); } }, "/":function(args){ FShell.fossil.sendCommand('/json'+args[0],undefined,{ beforeSend:function(req,opt){ print("Sending to: "+opt.url); }, onResponse:FShell.onResponseDefault() }); }, "eval":function(args){ eval(args.join(' ')); }, "login":function(args){ FShell.fossil.login(args[1], args[2], { onResponse:FShell.onResponseDefault() }); }, "whoami":function(args){ FShell.fossil.whoami({ onResponse:FShell.onResponseDefault() }); }, "HAI":function(args){ FShell.fossil.HAI({ onResponse:FShell.onResponseDefault() }); } }; FShell.commandAliases = { "li":"login", "lo":"logout", "who":"whoami", "hi":"HAI", "tci":"/timeline/ci?limit=3" }; FShell.mainLoop = function(){ var line; var check = /\S/; //var isJavaNull = /java\.lang\.null/; //print(typeof java.lang['null']); while( null != (line=this.readline(this.prompt)) ){ if(null===line) break /*EOF*/; else if( "" === line ) continue; //print("Got line: "+line); else if(!check.test(line)) continue; print('typeof line = '+typeof line); this.dispatchLine(line); print(""); } print("Bye!"); }; FShell.mainLoop(); |
Added ajax/i-test/rhino-test.js.
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var TestApp = { serverUrl: 'http://localhost:8080' //'http://fjson/cgi-bin/fossil-json.cgi' //'http://192.168.1.62:8080' //'http://fossil.wanderinghorse.net/repos/fossil-json-java/index.cgi' , verbose:false, fossilBinary:'fossil', wiki:{} }; (function bootstrap() { var srcdir = '../js/'; var includes = [srcdir+'json2.js', srcdir+'whajaj.js', srcdir+'fossil-ajaj.js' ]; for( var i in includes ) { load(includes[i]); } WhAjaj.Connector.prototype.sendImpl = WhAjaj.Connector.sendImpls.rhino; TestApp.fossil = new FossilAjaj({ asynchronous:false, /* rhino-based impl doesn't support async or timeout. */ timeout:0, url:TestApp.serverUrl, fossilBinary:TestApp.fossilBinary }); var cb = TestApp.fossil.ajaj.callbacks; cb.beforeSend = function(req,opt){ if(!TestApp.verbose) return; print("SENDING REQUEST: AJAJ options="+JSON.stringify(opt)); if(req) print("Request envelope="+WhAjaj.stringify(req)); }; cb.afterSend = function(req,opt){ //if(!TestApp.verbose) return; //print("REQUEST RETURNED: opt="+JSON.stringify(opt)); //if(req) print("Request="+WhAjaj.stringify(req)); }; cb.onError = function(req,opt){ if(!TestApp.verbose) return; print("ERROR: "+WhAjaj.stringify(opt)); }; cb.onResponse = function(resp,req){ if(!TestApp.verbose) return; print("GOT RESPONSE: "+(('string'===typeof resp) ? resp : WhAjaj.stringify(resp))); }; })(); /** Throws an exception of cond is a falsy value. */ function assert(cond, descr){ descr = descr || "Undescribed condition."; if(!cond){ print("Assertion FAILED: "+descr); throw new Error("Assertion failed: "+descr); // aarrgghh. Exceptions are of course swallowed by // the AJAX layer, to keep from killing a browser's // script environment. }else{ if(TestApp.verbose) print("Assertion OK: "+descr); } } /** Calls func() in a try/catch block and throws an exception if func() does NOT throw. */ function assertThrows(func, descr){ descr = descr || "Undescribed condition failed."; var ex; try{ func(); }catch(e){ ex = e; } if(!ex){ throw new Error("Function did not throw (as expected): "+descr); }else{ if(TestApp.verbose) print("Function threw (as expected): "+descr+": "+ex); } } /** Convenience form of TestApp.fossil.sendCommand(command,payload,ajajOpt). */ function send(command,payload, ajajOpt){ TestApp.fossil.sendCommand(command,payload,ajajOpt); } /** Asserts that resp is-a Object, resp.fossil is-a string, and !resp.resultCode. */ function assertResponseOK(resp){ assert('object' === typeof resp,'Response is-a object.'); assert( 'string' === typeof resp.fossil, 'Response contains fossil property.'); assert( undefined === resp.resultCode, 'resp.resultCode is not set'); } /** Asserts that resp is-a Object, resp.fossil is-a string, and resp.resultCode is a truthy value. If expectCode is set then it also asserts that (resp.resultCode=='FOSSIL-'+expectCode). */ function assertResponseError(resp,expectCode){ assert('object' === typeof resp,'Response is-a object.'); assert( 'string' === typeof resp.fossil, 'Response contains fossil property.'); assert( !!resp.resultCode, 'resp.resultCode='+resp.resultCode); if(expectCode){ assert( 'FOSSIL-'+expectCode == resp.resultCode, 'Expecting result code '+expectCode ); } } function testHAI(){ var rs; TestApp.fossil.HAI({ onResponse:function(resp,req){ rs = resp; } }); assertResponseOK(rs); TestApp.serverVersion = rs.fossil; assert( 'string' === typeof TestApp.serverVersion, 'server version = '+TestApp.serverVersion); } testHAI.description = 'Get server version info.'; function testIAmNobody(){ TestApp.fossil.whoami('/json/whoami'); assert('nobody' === TestApp.fossil.auth.name, 'User == nobody.' ); assert(!TestApp.fossil.auth.authToken, 'authToken is not set.' ); } testIAmNobody.description = 'Ensure that current user is "nobody".'; function testAnonymousLogin(){ TestApp.fossil.login(); assert('string' === typeof TestApp.fossil.auth.authToken, 'authToken = '+TestApp.fossil.auth.authToken); assert( 'string' === typeof TestApp.fossil.auth.name, 'User name = '+TestApp.fossil.auth.name); TestApp.fossil.userName = null; TestApp.fossil.whoami('/json/whoami'); assert( 'string' === typeof TestApp.fossil.auth.name, 'User name = '+TestApp.fossil.auth.name); } testAnonymousLogin.description = 'Perform anonymous login.'; function testAnonWiki(){ var rs; TestApp.fossil.sendCommand('/json/wiki/list',undefined,{ beforeSend:function(req,opt){ assert( req && (req.authToken==TestApp.fossil.auth.authToken), 'Request envelope contains expected authToken.' ); }, onResponse:function(resp,req){ rs = resp; } }); assertResponseOK(rs); assert( (typeof [] === typeof rs.payload) && rs.payload.length, "Wiki list seems to be okay."); TestApp.wiki.list = rs.payload; TestApp.fossil.sendCommand('/json/wiki/get',{ name:TestApp.wiki.list[0] },{ onResponse:function(resp,req){ rs = resp; } }); assertResponseOK(rs); assert(rs.payload.name == TestApp.wiki.list[0], "Fetched page name matches expectations."); print("Got first wiki page: "+WhAjaj.stringify(rs.payload)); } testAnonWiki.description = 'Fetch wiki list as anonymous user.'; function testAnonLogout(){ var rs; TestApp.fossil.logout({ onResponse:function(resp,req){ rs = resp; } }); assertResponseOK(rs); print("Ensure that second logout attempt fails..."); TestApp.fossil.logout({ onResponse:function(resp,req){ rs = resp; } }); assertResponseError(rs); } testAnonLogout.description = 'Log out anonymous user.'; function testExternalProcess(){ var req = { command:"HAI", requestId:'testExternalProcess()' }; var args = [TestApp.fossilBinary, 'json', '--json-input', '-']; var p = java.lang.Runtime.getRuntime().exec(args); var outs = p.getOutputStream(); var osr = new java.io.OutputStreamWriter(outs); var osb = new java.io.BufferedWriter(osr); var json = JSON.stringify(req); osb.write(json,0, json.length); //osb.flush(); osb.close(); var ins = p.getInputStream(); var isr = new java.io.InputStreamReader(ins); var br = new java.io.BufferedReader(isr); var line; while( null !== (line=br.readLine())){ print(line); } //outs.close(); ins.close(); } testExternalProcess.description = 'Run fossil as external process.'; function testExternalProcessHandler(){ var aj = TestApp.fossil.ajaj; var oldImpl = aj.sendImpl; aj.sendImpl = FossilAjaj.rhinoLocalBinarySendImpl; var rs; TestApp.fossil.sendCommand('/json/HAI',undefined,{ onResponse:function(resp,opt){ rs = resp; } }); aj.sendImpl = oldImpl; assertResponseOK(rs); print("Using local fossil binary via AJAX interface, we fetched: "+ WhAjaj.stringify(rs)); } testExternalProcessHandler.description = 'Try local fossil binary via AJAX interface.'; (function runAllTests(){ var testList = [ testHAI, testIAmNobody, testAnonymousLogin, testAnonWiki, testAnonLogout, //testExternalProcess, testExternalProcessHandler ]; var i, f; for( i = 0; i < testList.length; ++i ){ f = testList[i]; try{ print("Running test #"+(i+1)+": "+(f.description || "no description.")); f(); }catch(e){ print("Test #"+(i+1)+" failed: "+e); throw e; } } })(); print("Done! If you don't see an exception message in the last few lines, you win!"); |
Added ajax/index.html.
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <title>Fossil/JSON raw request sending</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script> <script type="text/javascript" src="js/whajaj.js"></script> <script type="text/javascript" src="js/fossil-ajaj.js"></script> <style type='text/css'> th { text-align: left; background-color: #ececec; } .dangerWillRobinson { background-color: yellow; } </style> <script type='text/javascript'> WhAjaj.Connector.options.ajax.url = /* Change this to your CGI/server root path: */ //'http://fjson/cgi-bin/fossil.cgi' //'/repos/fossil-sgb/json.cgi' '/cgi-bin/fossil-json.cgi' ; var TheApp = { response:null, sessionID:null, jqe:{}/*jqe==jQuery Elements*/, ajaxCount:0, cgi: new FossilAjaj() }; TheApp.startAjaxNotif = function() { ++this.ajaxCount; TheApp.jqe.responseContainer.removeClass('dangerWillRobinson'); this.jqe.ajaxNotification.attr( 'title', this.ajaxCount+" pending AJAX operation(s)..." ); if( 1 == this.ajaxCount ) this.jqe.ajaxNotification.fadeIn(); }; TheApp.endAjaxNotif = function() { --this.ajaxCount; this.jqe.ajaxNotification.attr( 'title', this.ajaxCount+" pending AJAX operation(s)..." ); if( 0 == this.ajaxCount ) this.jqe.ajaxNotification.fadeOut(); }; TheApp.responseContainsError = function(resp) { if( resp && resp.resultCode ) { //alert("Error response:\n"+JSON.stringify(resp,0,4)); TheApp.jqe.taResponse.val( "RESPONSE CONTAINS ERROR INFO:\n"+WhAjaj.stringify(resp) ); //TheApp.jqe.responseContainer.css({backgroundColor:'yellow'}); //TheApp.jqe.responseContainer.addClass('dangerWillRobinson'); TheApp.jqe.responseContainer.flash( '255,0,0', 1500 ); return true; } return false; }; TheApp.sendRequest = function() { var path = this.jqe.textPath.val(); var self = this; var data = this.jqe.taRequest.val(); var doPost = (data && data.length); var req; if( doPost ) try { req = JSON.parse(data); } catch(e) { TheApp.jqe.taResponse.val("Request is not valid JSON.\n"+e); return; } if( req ) { req.requestId = this.cgi.generateRequestId(); } var self = this; var opt = { url: WhAjaj.Connector.options.ajax.url + path, method: doPost ? 'POST' : 'GET' }; this.cgi.sendRequest( req, opt ); }; jQuery.fn.animateHighlight = function(highlightColor, duration) { var highlightBg = highlightColor || "#FFFF9C"; var animateMs = duration || 1500; var originalBg = this.css("backgroundColor"); this.stop().css("background-color", highlightBg).animate({backgroundColor: originalBg}, animateMs); }; jQuery.fn.flash = function( color, duration ) { var current = this.css( 'color' ); this.animate( { color: 'rgb(' + color + ')' }, duration / 2); this.animate( { color: current }, duration / 2 ); }; function myJsonPCallback(obj){ alert("JSONP callback got:\n"+WhAjaj.stringify(obj)); } jQuery(document).ready(function(){ var ids = [// list of HTML element IDs we use often. 'btnSend', 'ajaxNotification', 'currentAuthToken', 'responseContainer', 'taRequest', 'taRequestOpt', 'taResponse', 'textPath', 'timer' ]; var i, k; for( i = 0; i < ids.length; ++i ) { k = ids[i]; TheApp.jqe[k] = jQuery('#'+k); } TheApp.jqe.textPath. keyup(function(event){ if(event.keyCode == 13){ TheApp.sendRequest(); } }); TheApp.timer = { _tstart:0,_tend:0,duration:0, start:function(){ this._tstart = (new Date()).getTime(); }, end:function(){ this._tend = (new Date()).getTime(); return this.duration = this._tend - this._tstart; } }; var ajcb = TheApp.cgi.ajaj.callbacks; ajcb.beforeSend = function(req,opt) { TheApp.timer.start(); var val = req ? (('string'===typeof req) ? req : WhAjaj.stringify(req)) : ''; TheApp.jqe.taResponse.val(''); TheApp.jqe.taRequest.val( val ); TheApp.jqe.taRequestOpt.val( opt ? WhAjaj.stringify(opt) : '' ); TheApp.startAjaxNotif(); }; ajcb.afterSend = function(req,opt) { TheApp.timer.end(); TheApp.endAjaxNotif(); TheApp.jqe.timer.text( "(Round-trip time (incl. JS overhead): "+TheApp.timer.duration+'ms)' ); }; ajcb.onResponse = function(resp,req, opt) { var val; if(this.jsonp) return /*was already handled*/; try { val = WhAjaj.stringify(resp); } catch(e) { val = WhAjaj.stringify(e) } //alert("onResponse this:"+WhAjaj.stringify(this)); //alert("val="+val); // FIXME: this.url is hosed for login because of how i overload onResponse() if( opt.url ) TheApp.jqe.textPath.val(opt.url.replace(WhAjaj.Connector.options.ajax.url,'')); TheApp.jqe.taResponse.val( val ); }; ajcb.onError = function(req,opt) { TheApp.jqe.taResponse.val( "ERROR SENDING REQUEST:\n"+WhAjaj.stringify(opt) ); }; TheApp.cgi.onLogin = function(){ TheApp.jqe.taResponse.val( "Logged in:\n"+WhAjaj.stringify(this.auth)); TheApp.jqe.currentAuthToken.html("Logged in: "+WhAjaj.stringify(this.auth)); }; TheApp.cgi.onLogout = function(){ TheApp.jqe.taResponse.val( "Logged out!" ); TheApp.jqe.currentAuthToken.text("Not logged in"); }; TheApp.cgi.whoami(); jQuery('#headerArea').click(function(){ jQuery(this).slideUp('fast',function(){ jQuery(this).remove(); }); }); }); </script> </head> <body> <span id='ajaxNotification'></span> <div id='headerArea'> <h1>You know, for sending raw JSON requests to Fossil...</h1> If you're actually using this page, then you know what you're doing and don't need help text, hoverhelp, and a snazzy interface. <br><br> JSON API docs: <a href='https://docs.google.com/document/d/1fXViveNhDbiXgCuE7QDXQOKeFzf2qNUkBEgiUvoqFN4/edit'>https://docs.google.com/document/d/1fXViveNhDbiXgCuE7QDXQOKeFzf2qNUkBEgiUvoqFN4/edit</a> </div><!-- #headerArea --> See also: <a href='wiki-editor.html'>prototype wiki editor</a>. <h2>Request...</h2> Path: <input type='text' size='40' id='textPath' value='/json/HAI'/> <input type='button' value='Send...' id='btnSend' onclick='TheApp.sendRequest()' /><br/> If the POST textarea is not empty then it will be posted with the request. <hr/> <strong>Quick-posts:</strong><br/> <input type='button' value='HAI' onclick='TheApp.cgi.HAI()' /> <input type='button' value='HAI JSONP' onclick='TheApp.cgi.sendCommand("/json/HAI",undefined,{jsonp:"myJsonPCallback"});' /> <input type='button' value='version' onclick='TheApp.cgi.sendCommand("/json/version")' /> <input type='button' value='stat' onclick='TheApp.cgi.sendCommand("/json/stat?full=0")' /> <input type='button' value='whoami' onclick='TheApp.cgi.whoami()' /> <input type='button' value='cap' onclick='TheApp.cgi.sendCommand("/json/cap")' /> <input type='button' value='resultCodes' onclick='TheApp.cgi.sendCommand("/json/resultCodes")' /> <input type='button' value='g' onclick='TheApp.cgi.sendCommand("/json/g")' /> <br/> <input type='button' value='branch/list' onclick='TheApp.cgi.sendCommand("/json/branch/list")' /> <input type='button' value='timeline/ci' onclick='TheApp.cgi.sendCommand("/json/timeline/ci?files=true")' /> <input type='button' value='timeline/wiki' onclick='TheApp.cgi.sendCommand("/json/timeline/wiki")' /> <input type='button' value='timeline/ticket' onclick='TheApp.cgi.sendCommand("/json/timeline/ticket")' /> <input type='button' value='timeline/branch' onclick='TheApp.cgi.sendCommand("/json/timeline/branch")' /> <input type='button' value='wiki/list' onclick='TheApp.cgi.sendCommand("/json/wiki/list")' /> <input type='button' value='wiki/get Fossil' onclick='TheApp.cgi.sendCommand("/json/wiki/get",{name:"Fossil"})' /> <input type='button' value='wiki/get/Fossil' onclick='TheApp.cgi.sendCommand("/json/wiki/get/Fossil")' /> <br/> <input type='button' value='user/list' onclick='TheApp.cgi.sendCommand("/json/user/list")' /> <input type='button' value='user/get' onclick='TheApp.cgi.sendCommand("/json/user/get?name=anonymous")' /> <input type='button' value='tag/list' onclick='TheApp.cgi.sendCommand("/json/tag/list?includeTickets=false&raw=false")' /> <input type='button' value='tag/list/json' onclick='TheApp.cgi.sendCommand("/json/tag/list/json?raw=false")' /> <input type='button' value='tag/add' onclick='TheApp.cgi.sendCommand("/json/tag/add",{name:"json-add-tag-test",checkin:"json",value:"tag test",propagate:false,raw:false})' /> <input type='button' value='tag/cancel' onclick='TheApp.cgi.sendCommand("/json/tag/cancel",{name:"json-add-tag-test",checkin:"json",raw:false})' /> <input type='button' value='tag/find' onclick='TheApp.cgi.sendCommand("/json/tag/find",{name:"json",type:"*",raw:false,limit:5})' /> <br/> <input type='button' value='diff' onclick='TheApp.cgi.sendCommand("/json/diff",{v1:"b0e9b45baed6f885",v2:"5f225e261d836287",context:2})' /> <input type='button' value='diff/A/B' onclick='TheApp.cgi.sendCommand("/json/diff/b0e9b45baed6f885/5f225e261d836287?context=2")' /> <input type='button' value='query' onclick='TheApp.cgi.sendCommand("/json/query?format=o","SELECT * from user")' /> <input type='button' value='report list' onclick='TheApp.cgi.sendCommand("/json/report/list")' /> <input type='button' value='report get' onclick='TheApp.cgi.sendCommand("/json/report/get",2)' /> <input type='button' value='report run' onclick='TheApp.cgi.sendCommand("/json/report/run",{"report":2,"format":"o"})' /> <!-- not yet ready... <input type='button' value='artifact/XYZ' onclick='TheApp.cgi.sendCommand("/json/artifact?uuid=json")' /> --> <!-- <input type='button' value='get whiki' onclick='TheApp.cgi.getPages("whiki")' /> <input type='button' value='get more' onclick='TheApp.cgi.getPages("HelloWorld/WhikiNews")' /> <input type='button' value='get client data' onclick='TheApp.cgi.getPageClientData("HelloWorld/whiki/WhikiCommands")' /> <input type='button' value='save client data' onclick='TheApp.cgi.savePageClientData({"HelloWorld":[1,3,5]})' /> --> <hr/> <b>Login:</b> <br/> <input type='button' value='Anon. PW' onclick='TheApp.cgi.sendCommand("/json/anonymousPassword")' /> <input type='button' value='Anon. PW+Login' onclick='TheApp.cgi.login()' /> <br/> name:<input type='text' id='textUser' value='json-demo' size='12'/> pw:<input type='password' id='textPassword' value='json-demo' size='12'/> <input type='button' value='login' onclick='TheApp.cgi.login(jQuery("#textUser").val(),jQuery("#textPassword").val(),{onResponse:TheApp.onLogin})' /> <input type='button' value='logout' onclick='TheApp.cgi.logout()' /> <br/> <span id='currentAuthToken' style='font-family:monospaced'></span> <br/> <hr/> <table> <tr> <th>POST data</th> <th>Request AJAJ options</th> </tr> <tr> <td width='50%' valign='top'> <textarea id='taRequest' rows='10' cols='50'></textarea> </td> <td width='50%' valign='top'> <textarea id='taRequestOpt' rows='10' cols='40' readonly></textarea> </td> </tr> <tr> <th colspan='2'>Response <span id='timer'></span></th> </tr> <tr> <td colspan='2' id='responseContainer' valign='top'> <textarea id='taResponse' rows='20' cols='80' readonly></textarea> </td> </tr> </table> <div></div> <div></div> <div></div> </body></html> |
Added ajax/js/fossil-ajaj.js.
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/** This file contains a WhAjaj extension for use with Fossil/JSON. Author: Stephan Beal (sgbeal@googlemail.com) License: Public Domain */ /** Constructor for a new Fossil AJAJ client. ajajOpt may be an optional object suitable for passing to the WhAjaj.Connector() constructor. On returning, this.ajaj is-a WhAjaj.Connector instance which can be used to send requests to the back-end (though the convenience functions of this class are the preferred way to do it). Clients are encouraged to use FossilAjaj.sendCommand() (and friends) instead of the underlying WhAjaj.Connector API, since this class' API contains Fossil-specific request-calling handling (e.g. of authentication info) whereas WhAjaj is more generic. */ function FossilAjaj(ajajOpt) { this.ajaj = new WhAjaj.Connector(ajajOpt); return this; } FossilAjaj.prototype.generateRequestId = function() { return this.ajaj.generateRequestId(); }; /** Proxy for this.ajaj.sendRequest(). */ FossilAjaj.prototype.sendRequest = function(req,opt) { return this.ajaj.sendRequest(req,opt); }; /** Sends a command to the fossil back-end. Command should be the path part of the URL, e.g. /json/stat, payload is a request-specific value type (may often be null/undefined). ajajOpt is an optional object holding WhAjaj.sendRequest()-compatible options. This function constructs a Fossil/JSON request envelope based on the given arguments and adds this.auth.authToken and a requestId to it. */ FossilAjaj.prototype.sendCommand = function(command, payload, ajajOpt) { var req; ajajOpt = ajajOpt || {}; if(payload || (this.auth && this.auth.authToken) || ajajOpt.jsonp) { req = { payload:payload, requestId:('function' === typeof this.generateRequestId) ? this.generateRequestId() : undefined, authToken:(this.auth ? this.auth.authToken : undefined), jsonp:('string' === typeof ajajOpt.jsonp) ? ajajOpt.jsonp : undefined }; } ajajOpt.method = req ? 'POST' : 'GET'; // just for debuggering: ajajOpt.method = 'POST'; if(!req) req={}; if(command) ajajOpt.url = this.ajaj.derivedOption('url',ajajOpt) + command; this.ajaj.sendRequest(req,ajajOpt); }; /** Sends a login request to the back-end. ajajOpt is an optional configuration object suitable for passing to sendCommand(). After the response returns, this.auth will be set to the response payload. If name === 'anonymous' (the default if none is passed in) then this function ignores the pw argument and must make two requests - the first one gets the captcha code and the second one submits it. ajajOpt.onResponse() (if set) is only called for the actual login response (the 2nd one), as opposed to being called for both requests. However, this.ajaj.callbacks.onResponse() _is_ called for both (because it happens at a lower level). If this object has an onLogin() function it is called (with no arguments) before the onResponse() handler of the login is called (that is the 2nd request for anonymous logins). */ FossilAjaj.prototype.login = function(name,pw,ajajOpt) { name = name || 'anonymous'; var self = this; var loginReq = { name:name, password:pw }; ajajOpt = this.ajaj.normalizeAjaxParameters( ajajOpt || {} ); var oldOnResponse = ajajOpt.onResponse; ajajOpt.onResponse = function(resp,req) { var thisOpt = this; //alert('login response:\n'+WhAjaj.stringify(resp)); if( resp && resp.payload ) { //self.userName = resp.payload.name; //self.capabilities = resp.payload.capabilities; self.auth = resp.payload; } if( WhAjaj.isFunction( self.onLogin ) ){ try{ self.onLogin(); } catch(e){} } if( WhAjaj.isFunction(oldOnResponse) ) { oldOnResponse.apply(thisOpt,[resp,req]); } }; function doLogin(){ //alert("Sending login request..."+WhAjaj.stringify(loginReq)); self.sendCommand('/json/login', loginReq, ajajOpt); } if( 'anonymous' === name ){ this.sendCommand('/json/anonymousPassword',undefined,{ onResponse:function(resp,req){ /* if( WhAjaj.isFunction(oldOnResponse) ){ oldOnResponse.apply(this, [resp,req]); }; */ if(resp && !resp.resultCode){ //alert("Got PW. Trying to log in..."+WhAjaj.stringify(resp)); loginReq.anonymousSeed = resp.payload.seed; loginReq.password = resp.payload.password; doLogin(); } } }); } else doLogin(); }; /** Logs out of fossil, invaliding this login token. ajajOpt is an optional configuration object suitable for passing to sendCommand(). If this object has an onLogout() function it is called (with no arguments) before the onResponse() handler is called. IFF the response succeeds then this.auth is unset. */ FossilAjaj.prototype.logout = function(ajajOpt) { var self = this; ajajOpt = this.ajaj.normalizeAjaxParameters( ajajOpt || {} ); var oldOnResponse = ajajOpt.onResponse; ajajOpt.onResponse = function(resp,req) { var thisOpt = this; self.auth = undefined; if( WhAjaj.isFunction( self.onLogout ) ){ try{ self.onLogout(); } catch(e){} } if( WhAjaj.isFunction(oldOnResponse) ) { oldOnResponse.apply(thisOpt,[resp,req]); } }; this.sendCommand('/json/logout', undefined, ajajOpt ); }; /** Sends a HAI request to the server. /json/HAI is an alias /json/version. ajajOpt is an optional configuration object suitable for passing to sendCommand(). */ FossilAjaj.prototype.HAI = function(ajajOpt) { this.sendCommand('/json/HAI', undefined, ajajOpt); }; /** Sends a /json/whoami request. Updates this.auth to contain the login info, removing them if the response does not contain that data. */ FossilAjaj.prototype.whoami = function(ajajOpt) { var self = this; ajajOpt = this.ajaj.normalizeAjaxParameters( ajajOpt || {} ); var oldOnResponse = ajajOpt.onResponse; ajajOpt.onResponse = function(resp,req) { var thisOpt = this; if( resp && resp.payload ){ if(!self.auth || (self.auth.authToken!==resp.payload.authToken)){ self.auth = resp.payload; if( WhAjaj.isFunction(self.onLogin) ){ self.onLogin(); } } } else { delete self.auth; } if( WhAjaj.isFunction(oldOnResponse) ) { oldOnResponse.apply(thisOpt,[resp,req]); } }; self.sendCommand('/json/whoami', undefined, ajajOpt); }; /** EXPERIMENTAL concrete WhAjaj.Connector.sendImpl() implementation which uses Rhino to connect to a local fossil binary for input and output. Its signature and semantics are as described for WhAjaj.Connector.prototype.sendImpl(), with a few exceptions and additions: - It does not support timeouts or asynchronous mode. - The args.fossilBinary property must point to the local fossil binary (it need not be a complete path if fossil is in the $PATH). This function throws (without calling any request callbacks) if args.fossilBinary is not set. fossilBinary may be set on WhAjaj.Connector.options.ajax, in the FossilAjaj constructor call, as the ajax options parameter to any of the FossilAjaj.sendCommand() family of functions, or by setting aFossilAjajInstance.ajaj.options.fossilBinary on a specific FossilAjaj instance. - It uses the args.url field to create the "command" property of the request, constructs a request envelope, spawns a fossil process in JSON mode, feeds it the request envelope, and returns the response envelope via the same mechanisms defined for the HTTP-based implementations. The interface is otherwise compatible with the "normal" FossilAjaj.sendCommand() front-end (it is, however, fossil-specific, and not back-end agnostic like the WhAjaj.sendImpl() interface intends). */ FossilAjaj.rhinoLocalBinarySendImpl = function(request,args){ var self = this; request = request || {}; if(!args.fossilBinary){ throw new Error("fossilBinary is not set on AJAX options!"); } var url = args.url.split('?')[0].split(/\/+/); if(url.length>1){ // 3x shift(): protocol, host, 'json' part of path request.command = (url.shift(),url.shift(),url.shift(), url.join('/')); } delete args.url; //print("rhinoLocalBinarySendImpl SENDING: "+WhAjaj.stringify(request)); var json; try{ var pargs = [args.fossilBinary, 'json', '--json-input', '-']; var p = java.lang.Runtime.getRuntime().exec(pargs); var outs = p.getOutputStream(); var osr = new java.io.OutputStreamWriter(outs); var osb = new java.io.BufferedWriter(osr); json = JSON.stringify(request); osb.write(json,0, json.length); osb.close(); var ins = p.getInputStream(); var isr = new java.io.InputStreamReader(ins); var br = new java.io.BufferedReader(isr); var line; json = []; while( null !== (line=br.readLine())){ json.push(line); } ins.close(); }catch(e){ args.errorMessage = e.toString(); WhAjaj.Connector.sendHelper.onSendError.apply( self, [request, args] ); return undefined; } json = json.join(''); //print("READ IN JSON: "+json); WhAjaj.Connector.sendHelper.onSendSuccess.apply( self, [request, json, args] ); }/*rhinoLocalBinary*/ |
Added ajax/js/json2.js.
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/* http://www.JSON.org/json2.js 2009-06-29 Public Domain. NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK. See http://www.JSON.org/js.html This file creates a global JSON object containing two methods: stringify and parse. JSON.stringify(value, replacer, space) value any JavaScript value, usually an object or array. replacer an optional parameter that determines how object values are stringified for objects. It can be a function or an array of strings. space an optional parameter that specifies the indentation of nested structures. If it is omitted, the text will be packed without extra whitespace. If it is a number, it will specify the number of spaces to indent at each level. If it is a string (such as '\t' or ' '), it contains the characters used to indent at each level. This method produces a JSON text from a JavaScript value. When an object value is found, if the object contains a toJSON method, its toJSON method will be called and the result will be stringified. A toJSON method does not serialize: it returns the value represented by the name/value pair that should be serialized, or undefined if nothing should be serialized. The toJSON method will be passed the key associated with the value, and this will be bound to the object holding the key. For example, this would serialize Dates as ISO strings. Date.prototype.toJSON = function (key) { function f(n) { // Format integers to have at least two digits. return n < 10 ? '0' + n : n; } return this.getUTCFullYear() + '-' + f(this.getUTCMonth() + 1) + '-' + f(this.getUTCDate()) + 'T' + f(this.getUTCHours()) + ':' + f(this.getUTCMinutes()) + ':' + f(this.getUTCSeconds()) + 'Z'; }; You can provide an optional replacer method. It will be passed the key and value of each member, with this bound to the containing object. The value that is returned from your method will be serialized. If your method returns undefined, then the member will be excluded from the serialization. If the replacer parameter is an array of strings, then it will be used to select the members to be serialized. It filters the results such that only members with keys listed in the replacer array are stringified. Values that do not have JSON representations, such as undefined or functions, will not be serialized. Such values in objects will be dropped; in arrays they will be replaced with null. You can use a replacer function to replace those with JSON values. JSON.stringify(undefined) returns undefined. The optional space parameter produces a stringification of the value that is filled with line breaks and indentation to make it easier to read. If the space parameter is a non-empty string, then that string will be used for indentation. If the space parameter is a number, then the indentation will be that many spaces. Example: text = JSON.stringify(['e', {pluribus: 'unum'}]); // text is '["e",{"pluribus":"unum"}]' text = JSON.stringify(['e', {pluribus: 'unum'}], null, '\t'); // text is '[\n\t"e",\n\t{\n\t\t"pluribus": "unum"\n\t}\n]' text = JSON.stringify([new Date()], function (key, value) { return this[key] instanceof Date ? 'Date(' + this[key] + ')' : value; }); // text is '["Date(---current time---)"]' JSON.parse(text, reviver) This method parses a JSON text to produce an object or array. It can throw a SyntaxError exception. The optional reviver parameter is a function that can filter and transform the results. It receives each of the keys and values, and its return value is used instead of the original value. If it returns what it received, then the structure is not modified. If it returns undefined then the member is deleted. Example: // Parse the text. Values that look like ISO date strings will // be converted to Date objects. myData = JSON.parse(text, function (key, value) { var a; if (typeof value === 'string') { a = /^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2}(?:\.\d*)?)Z$/.exec(value); if (a) { return new Date(Date.UTC(+a[1], +a[2] - 1, +a[3], +a[4], +a[5], +a[6])); } } return value; }); myData = JSON.parse('["Date(09/09/2001)"]', function (key, value) { var d; if (typeof value === 'string' && value.slice(0, 5) === 'Date(' && value.slice(-1) === ')') { d = new Date(value.slice(5, -1)); if (d) { return d; } } return value; }); This is a reference implementation. You are free to copy, modify, or redistribute. This code should be minified before deployment. See http://javascript.crockford.com/jsmin.html USE YOUR OWN COPY. IT IS EXTREMELY UNWISE TO LOAD CODE FROM SERVERS YOU DO NOT CONTROL. */ /*jslint evil: true */ /*members "", "\b", "\t", "\n", "\f", "\r", "\"", JSON, "\\", apply, call, charCodeAt, getUTCDate, getUTCFullYear, getUTCHours, getUTCMinutes, getUTCMonth, getUTCSeconds, hasOwnProperty, join, lastIndex, length, parse, prototype, push, replace, slice, stringify, test, toJSON, toString, valueOf */ // Create a JSON object only if one does not already exist. We create the // methods in a closure to avoid creating global variables. var JSON = JSON || {}; (function () { function f(n) { // Format integers to have at least two digits. return n < 10 ? '0' + n : n; } if (typeof Date.prototype.toJSON !== 'function') { Date.prototype.toJSON = function (key) { return isFinite(this.valueOf()) ? this.getUTCFullYear() + '-' + f(this.getUTCMonth() + 1) + '-' + f(this.getUTCDate()) + 'T' + f(this.getUTCHours()) + ':' + f(this.getUTCMinutes()) + ':' + f(this.getUTCSeconds()) + 'Z' : null; }; String.prototype.toJSON = Number.prototype.toJSON = Boolean.prototype.toJSON = function (key) { return this.valueOf(); }; } var cx = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g, escapable = /[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g, gap, indent, meta = { // table of character substitutions '\b': '\\b', '\t': '\\t', '\n': '\\n', '\f': '\\f', '\r': '\\r', '"' : '\\"', '\\': '\\\\' }, rep; function quote(string) { // If the string contains no control characters, no quote characters, and no // backslash characters, then we can safely slap some quotes around it. // Otherwise we must also replace the offending characters with safe escape // sequences. escapable.lastIndex = 0; return escapable.test(string) ? '"' + string.replace(escapable, function (a) { var c = meta[a]; return typeof c === 'string' ? c : '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4); }) + '"' : '"' + string + '"'; } function str(key, holder) { // Produce a string from holder[key]. var i, // The loop counter. k, // The member key. v, // The member value. length, mind = gap, partial, value = holder[key]; // If the value has a toJSON method, call it to obtain a replacement value. if (value && typeof value === 'object' && typeof value.toJSON === 'function') { value = value.toJSON(key); } // If we were called with a replacer function, then call the replacer to // obtain a replacement value. if (typeof rep === 'function') { value = rep.call(holder, key, value); } // What happens next depends on the value's type. switch (typeof value) { case 'string': return quote(value); case 'number': // JSON numbers must be finite. Encode non-finite numbers as null. return isFinite(value) ? String(value) : 'null'; case 'boolean': case 'null': // If the value is a boolean or null, convert it to a string. Note: // typeof null does not produce 'null'. The case is included here in // the remote chance that this gets fixed someday. return String(value); // If the type is 'object', we might be dealing with an object or an array or // null. case 'object': // Due to a specification blunder in ECMAScript, typeof null is 'object', // so watch out for that case. if (!value) { return 'null'; } // Make an array to hold the partial results of stringifying this object value. gap += indent; partial = []; // Is the value an array? if (Object.prototype.toString.apply(value) === '[object Array]') { // The value is an array. Stringify every element. Use null as a placeholder // for non-JSON values. length = value.length; for (i = 0; i < length; i += 1) { partial[i] = str(i, value) || 'null'; } // Join all of the elements together, separated with commas, and wrap them in // brackets. v = partial.length === 0 ? '[]' : gap ? '[\n' + gap + partial.join(',\n' + gap) + '\n' + mind + ']' : '[' + partial.join(',') + ']'; gap = mind; return v; } // If the replacer is an array, use it to select the members to be stringified. if (rep && typeof rep === 'object') { length = rep.length; for (i = 0; i < length; i += 1) { k = rep[i]; if (typeof k === 'string') { v = str(k, value); if (v) { partial.push(quote(k) + (gap ? ': ' : ':') + v); } } } } else { // Otherwise, iterate through all of the keys in the object. for (k in value) { if (Object.hasOwnProperty.call(value, k)) { v = str(k, value); if (v) { partial.push(quote(k) + (gap ? ': ' : ':') + v); } } } } // Join all of the member texts together, separated with commas, // and wrap them in braces. v = partial.length === 0 ? '{}' : gap ? '{\n' + gap + partial.join(',\n' + gap) + '\n' + mind + '}' : '{' + partial.join(',') + '}'; gap = mind; return v; } } // If the JSON object does not yet have a stringify method, give it one. if (typeof JSON.stringify !== 'function') { JSON.stringify = function (value, replacer, space) { // The stringify method takes a value and an optional replacer, and an optional // space parameter, and returns a JSON text. The replacer can be a function // that can replace values, or an array of strings that will select the keys. // A default replacer method can be provided. Use of the space parameter can // produce text that is more easily readable. var i; gap = ''; indent = ''; // If the space parameter is a number, make an indent string containing that // many spaces. if (typeof space === 'number') { for (i = 0; i < space; i += 1) { indent += ' '; } // If the space parameter is a string, it will be used as the indent string. } else if (typeof space === 'string') { indent = space; } // If there is a replacer, it must be a function or an array. // Otherwise, throw an error. rep = replacer; if (replacer && typeof replacer !== 'function' && (typeof replacer !== 'object' || typeof replacer.length !== 'number')) { throw new Error('JSON.stringify'); } // Make a fake root object containing our value under the key of ''. // Return the result of stringifying the value. return str('', {'': value}); }; } // If the JSON object does not yet have a parse method, give it one. if (typeof JSON.parse !== 'function') { JSON.parse = function (text, reviver) { // The parse method takes a text and an optional reviver function, and returns // a JavaScript value if the text is a valid JSON text. var j; function walk(holder, key) { // The walk method is used to recursively walk the resulting structure so // that modifications can be made. var k, v, value = holder[key]; if (value && typeof value === 'object') { for (k in value) { if (Object.hasOwnProperty.call(value, k)) { v = walk(value, k); if (v !== undefined) { value[k] = v; } else { delete value[k]; } } } } return reviver.call(holder, key, value); } // Parsing happens in four stages. In the first stage, we replace certain // Unicode characters with escape sequences. JavaScript handles many characters // incorrectly, either silently deleting them, or treating them as line endings. cx.lastIndex = 0; if (cx.test(text)) { text = text.replace(cx, function (a) { return '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4); }); } // In the second stage, we run the text against regular expressions that look // for non-JSON patterns. We are especially concerned with '()' and 'new' // because they can cause invocation, and '=' because it can cause mutation. // But just to be safe, we want to reject all unexpected forms. // We split the second stage into 4 regexp operations in order to work around // crippling inefficiencies in IE's and Safari's regexp engines. First we // replace the JSON backslash pairs with '@' (a non-JSON character). Second, we // replace all simple value tokens with ']' characters. Third, we delete all // open brackets that follow a colon or comma or that begin the text. Finally, // we look to see that the remaining characters are only whitespace or ']' or // ',' or ':' or '{' or '}'. If that is so, then the text is safe for eval. if (/^[\],:{}\s]*$/. test(text.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, '@'). replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']'). replace(/(?:^|:|,)(?:\s*\[)+/g, ''))) { // In the third stage we use the eval function to compile the text into a // JavaScript structure. The '{' operator is subject to a syntactic ambiguity // in JavaScript: it can begin a block or an object literal. We wrap the text // in parens to eliminate the ambiguity. j = eval('(' + text + ')'); // In the optional fourth stage, we recursively walk the new structure, passing // each name/value pair to a reviver function for possible transformation. return typeof reviver === 'function' ? walk({'': j}, '') : j; } // If the text is not JSON parseable, then a SyntaxError is thrown. throw new SyntaxError('JSON.parse'); }; } }()); |
Added ajax/js/whajaj.js.
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/** This file provides a JS interface into the core functionality of JSON-centric back-ends. It sends GET or JSON POST requests to a back-end and expects JSON responses. The exact semantics of the underlying back-end and overlying front-end are not its concern, and it leaves the interpretation of the data up to the client/server insofar as possible. All functionality is part of a class named WhAjaj, and that class acts as namespace for this framework. Author: Stephan Beal (http://wanderinghorse.net/home/stephan/) License: Public Domain This framework is directly derived from code originally found in http://code.google.com/p/jsonmessage, and later in http://whiki.wanderinghorse.net, where it contained quite a bit of application-specific logic. It was eventually (the 3rd time i needed it) split off into its own library to simplify inclusion into my many mini-projects. */ /** The WhAjaj function is primarily a namespace, and not intended to called or instantiated via the 'new' operator. */ function WhAjaj() { } /** Returns a millisecond Unix Epoch timestamp. */ WhAjaj.msTimestamp = function() { return (new Date()).getTime(); }; /** Returns a Unix Epoch timestamp (in seconds) in integer format. Reminder to self: (1.1 %1.2) evaluates to a floating-point value in JS, and thus this implementation is less than optimal. */ WhAjaj.unixTimestamp = function() { var ts = (new Date()).getTime(); return parseInt( ""+((ts / 1000) % ts) ); }; /** Returns true if v is-a Array instance. */ WhAjaj.isArray = function( v ) { return (v && (v instanceof Array) || (Object.prototype.toString.call(v) === "[object Array]") ); /* Reminders to self: typeof [] == "object" toString.call([]) == "[object Array]" ([]).toString() == empty */ }; /** Returns true if v is-a Object instance. */ WhAjaj.isObject = function( v ) { return v && (v instanceof Object) && ('[object Object]' === Object.prototype.toString.apply(v) ); }; /** Returns true if v is-a Function instance. */ WhAjaj.isFunction = function(obj) { return obj && ( (obj instanceof Function) || ('function' === typeof obj) || ("[object Function]" === Object.prototype.toString.call(obj)) ) ; }; /** Parses window.location.search-style string into an object containing key/value pairs of URL arguments (already urldecoded). If the str argument is not passed (arguments.length==0) then window.location.search.substring(1) is used by default. If neither str is passed in nor window exists then false is returned. On success it returns an Object containing the key/value pairs parsed from the string. FIXME: for keys in the form "name[]", build an array of results, like PHP does. */ WhAjaj.processUrlArgs = function(str) { if( 0 === arguments.length ) { if( (undefined === typeof window) || !window.location || !window.location.search ) return false; else str = (''+window.location.search).substring(1); } if( ! str ) return false; var args = {}; var sp = str.split(/&+/); var rx = /^([^=]+)(=(.+))?/; var i, m; for( i in sp ) { m = rx.exec( sp[i] ); if( ! m ) continue; args[decodeURIComponent(m[1])] = (m[3] ? decodeURIComponent(m[3]) : true); } return args; }; /** A simple wrapper around JSON.stringify(), using my own personal preferred values for the 2nd and 3rd parameters. To globally set its indentation level, assign WhAjaj.stringify.indent to an integer value (0 for no intendation). This function is intended only for human-readable output, not generic over-the-wire JSON output (where JSON.stringify(val) will produce smaller results). */ WhAjaj.stringify = function(val) { if( ! arguments.callee.indent ) arguments.callee.indent = 4; return JSON.stringify(val,0,arguments.callee.indent); }; /** Each instance of this class holds state information for making AJAJ requests to a back-end system. While clients may use one "requester" object per connection attempt, for connections to the same back-end, using an instance configured for that back-end can simplify usage. This class is designed so that the actual connection-related details (i.e. _how_ it connects to the back-end) may be re-implemented to use a client's preferred connection mechanism (e.g. jQuery). The optional opt paramater may be an object with any (or all) of the properties documented for WhAjaj.Connector.options.ajax. Properties set here (or later via modification of the "options" property of this object) will be used in calls to WhAjaj.Connector.sendRequest(), and these override (normally) any options set in WhAjaj.Connector.options.ajax. Note that WhAjaj.Connector.sendRequest() _also_ takes an options object, and ones passed there will override, for purposes of that one request, any options passed in here or defined in WhAjaj.Connector.options.ajax. See WhAjaj.Connector.options.ajax and WhAjaj.Connector.prototype.sendRequest() for more details about the precedence of options. Sample usage: @code // Set up common connection-level options: var cgi = new WhAjaj.Connector({ url: '/cgi-bin/my.cgi', timeout:10000, onResponse(resp,req) { alert(JSON.stringify(resp,0.4)); }, onError(req,opt) { alert(opt.errorMessage); } }); // Any of those options may optionally be set globally in // WhAjaj.Connector.options.ajax (onError(), beforeSend(), and afterSend() // are often easiest/most useful to set globally). // Get list of pages... cgi.sendRequest( null, { onResponse(resp,req){ alert(WhAjaj.stringify(resp)); } }); @endcode For common request types, clients can add functions to this object which act as wrappers for backend-specific functionality. As a simple example: @code cgi.login = function(name,pw,ajajOpt) { this.sendRequest( {name:name, password:pw}, ajajOpt ); }; @endcode TODOs: - Caching of page-load requests, with a configurable lifetime. - Use-cases like the above login() function are a tiny bit problematic to implement when each request has a different URL path (i know this from the whiki implementation). This is partly a side-effect of design descisions made back in the very first days of this code's life. i need to go through and see where i can bend those conventions a bit (where it won't break my other apps unduly). */ WhAjaj.Connector = function(opt) { if(WhAjaj.isObject(opt)) this.options = opt; //TODO?: this.$cache = {}; }; /** The core options used by WhAjaj.Connector instances for performing network operations. These options can (and some _should_) be changed by a client application. They can also be changed on specific instances of WhAjaj.Connector, but for most applications it is simpler to set them here and not have to bother with configuring each WhAjaj.Connector instance. Apps which use multiple back-ends at one time, however, will need to customize each instance for a given back-end. */ WhAjaj.Connector.options = { /** A (meaningless) prefix to apply to WhAjaj.Connector-generated request IDs. */ requestIdPrefix:'WhAjaj.Connector-', /** Default options for WhAjaj.Connector.sendRequest() connection parameters. This object holds only connection-related options and callbacks (all optional), and not options related to the required JSON structure of any given request. i.e. the page name used in a get-page request are not set here but are specified as part of the request object. These connection options are a "normalized form" of options often found in various AJAX libraries like jQuery, Prototype, dojo, etc. This approach allows us to swap out the real connection-related parts by writing a simple proxy which transforms our "normalized" form to the backend-specific form. For examples, see the various implementations stored in WhAjaj.Connector.sendImpls. The following callback options are, in practice, almost always set globally to some app-wide defaults: - onError() to report errors using a common mechanism. - beforeSend() to start a visual activity notification - afterSend() to disable the visual activity notification However, be aware that if any given WhAjaj.Connector instance is given its own before/afterSend callback then those will override these. Mixing shared/global and per-instance callbacks can potentially lead to confusing results if, e.g., the beforeSend() and afterSend() functions have side-effects but are not used with their proper before/after partner. TODO: rename this to 'ajaj' (the name is historical). The problem with renaming it is is that the word 'ajax' is pretty prevelant in the source tree, so i can't globally swap it out. */ ajax: { /** URL of the back-end server/CGI. */ url: '/some/path', /** Connection method. Some connection-related functions might override any client-defined setting. Must be one of 'GET' or 'POST'. For custom connection implementation, it may optionally be some implementation-specified value. Normally the API can derive this value automatically - if the request uses JSON data it is POSTed, else it is GETted. */ method:'GET', /** A hint whether to run the operation asynchronously or not. Not all concrete WhAjaj.Connector.sendImpl() implementations can support this. Interestingly, at least one popular AJAX toolkit does not document supporting _synchronous_ AJAX operations. All common browser-side implementations support async operation, but non-browser implementations migth not. */ asynchronous:true, /** A HTTP authentication login name for the AJAX connection. Not all concrete WhAjaj.Connector.sendImpl() implementations can support this. */ loginName:undefined, /** An HTTP authentication login password for the AJAJ connection. Not all concrete WhAjaj.Connector.sendImpl() implementations can support this. */ loginPassword:undefined, /** A connection timeout, in milliseconds, for establishing an AJAJ connection. Not all concrete WhAjaj.Connector.sendImpl() implementations can support this. */ timeout:10000, /** If an AJAJ request receives JSON data from the back-end, that data is passed as a plain Object as the response parameter (exception: in jsonp mode it is passed a string). The initiating request object is passed as the second parameter, but clients can normally ignore it (only those which need a way to map specific requests to responses will need it). The 3rd parameter is the same as the 'this' object for the context of the callback, but is provided because the instance-level callbacks (set in (WhAjaj.Connector instance).callbacks, require it in some cases (because their 'this' is different!). Note that the response might contain error information which comes from the back-end. The difference between this error info and the info passed to the onError() callback is that this data indicates an application-level error, whereas onError() is used to report connection-level problems or when the backend produces non-JSON data (which, when not in jsonp mode, is unexpected and is as fatal to the request as a connection error). */ onResponse: function(response, request, opt){}, /** If an AJAX request fails to establish a connection or it receives non-JSON data from the back-end, this function is called (e.g. timeout error or host name not resolvable). It is passed the originating request and the "normalized" connection parameters used for that request. The connectOpt object "should" (or "might") have an "errorMessage" property which describes the nature of the problem. Clients will almost always want to replace the default implementation with something which integrates into their application. */ onError: function(request, connectOpt) { alert('AJAJ request failed:\n' +'Connection information:\n' +JSON.stringify(connectOpt,0,4) ); }, /** Called before each connection attempt is made. Clients can use this to, e.g., enable a visual "network activity notification" for the user. It is passed the original request object and the normalized connection parameters for the request. If this function changes opt, those changes _are_ applied to the subsequent request. If this function throws, neither the onError() nor afterSend() callbacks are triggered and WhAjaj.Connector.sendImpl() propagates the exception back to the caller. */ beforeSend: function(request,opt){}, /** Called after an AJAJ connection attempt completes, regardless of success or failure. Passed the same parameters as beforeSend() (see that function for details). Here's an example of setting up a visual notification on ajax operations using jQuery (but it's also easy to do without jQuery as well): @code function startAjaxNotif(req,opt) { var me = arguments.callee; var c = ++me.ajaxCount; me.element.text( c + " pending AJAX operation(s)..." ); if( 1 == c ) me.element.stop().fadeIn(); } startAjaxNotif.ajaxCount = 0. startAjaxNotif.element = jQuery('#whikiAjaxNotification'); function endAjaxNotif() { var c = --startAjaxNotif.ajaxCount; startAjaxNotif.element.text( c+" pending AJAX operation(s)..." ); if( 0 == c ) startAjaxNotif.element.stop().fadeOut(); } @endcode Set the beforeSend/afterSend properties to those functions to enable the notifications by default. */ afterSend: function(request,opt){}, /** If jsonp is a string then the WhAjaj-internal response handling code ASSUMES that the response contains a JSONP-style construct and eval()s it after afterSend() but before onResponse(). In this case, onResponse() will get a string value for the response instead of a response object parsed from JSON. */ jsonp:undefined, /** Don't use yet. Planned future option. */ propagateExceptions:false } }; /** WhAjaj.Connector.prototype.callbacks defines callbacks analog to the onXXX callbacks defined in WhAjaj.Connector.options.ajax, with two notable differences: 1) these callbacks, if set, are called in addition to any request-specific callback. The intention is to allow a framework to set "framework-level" callbacks which should be called independently of the request-specific callbacks (without interfering with them, e.g. requiring special re-forwarding features). 2) The 'this' object in these callbacks is the Connector instance associated with the callback, whereas the "other" onXXX form has its "ajax options" object as its this. When this API says that an onXXX callback will be called for a request, both the request's onXXX (if set) and this one (if set) will be called. */ WhAjaj.Connector.prototype.callbacks = {}; /** Instance-specific values for AJAJ-level properties (as opposed to application-level request properties). Options set here "override" those specified in WhAjaj.Connector.options.ajax and are "overridden" by options passed to sendRequest(). */ WhAjaj.Connector.prototype.options = {}; /** Tries to find the given key in any of the following, returning the first match found: opt, this.options, WhAjaj.Connector.options.ajax. Returns undefined if key is not found. */ WhAjaj.Connector.prototype.derivedOption = function(key,opt) { var v = opt ? opt[key] : undefined; if( undefined !== v ) return v; else v = this.options[key]; if( undefined !== v ) return v; else v = WhAjaj.Connector.options.ajax[key]; return v; }; /** Returns a unique string on each call containing a generic reandom request identifier string. This is not used by the core API but can be used by client code to generate unique IDs for each request (if needed). The exact format is unspecified and may change in the future. Request IDs can be used by clients to "match up" responses to specific requests if needed. In practice, however, they are seldom, if ever, needed. When passing several concurrent requests through the same response callback, it might be useful for some clients to be able to distinguish, possibly re-routing them through other handlers based on the originating request type. If this.options.requestIdPrefix or WhAjaj.Connector.options.requestIdPrefix is set then that text is prefixed to the returned string. */ WhAjaj.Connector.prototype.generateRequestId = function() { if( undefined === arguments.callee.sequence ) { arguments.callee.sequence = 0; } var pref = this.options.requestIdPrefix || WhAjaj.Connector.options.requestIdPrefix || ''; return pref + WhAjaj.msTimestamp() + '/'+(Math.round( Math.random() * 100000000) )+ ':'+(++arguments.callee.sequence); }; /** Copies (SHALLOWLY) all properties in opt to this.options. */ WhAjaj.Connector.prototype.addOptions = function(opt) { var k, v; for( k in opt ) { if( ! opt.hasOwnProperty(k) ) continue /* proactive Prototype kludge! */; this.options[k] = opt[k]; } return this.options; }; /** An internal helper object which holds several functions intended to simplify the creation of concrete communication channel implementations for WhAjaj.Connector.sendImpl(). These operations take care of some of the more error-prone parts of ensuring that onResponse(), onError(), etc. callbacks are called consistently using the same rules. */ WhAjaj.Connector.sendHelper = { /** opt is assumed to be a normalized set of WhAjaj.Connector.sendRequest() options. This function creates a url by concatenating opt.url and some form of opt.urlParam. If opt.urlParam is an object or string then it is appended to the url. An object is assumed to be a one-dimensional set of simple (urlencodable) key/value pairs, and not larger data structures. A string value is assumed to be a well-formed, urlencoded set of key/value pairs separated by '&' characters. The new/normalized URL is returned (opt is not modified). If opt.urlParam is not set then opt.url is returned (or an empty string if opt.url is itself a false value). TODO: if opt is-a Object and any key points to an array, build up a list of keys in the form "keyname[]". We could arguably encode sub-objects like "keyname[subkey]=...", but i don't know if that's conventions-compatible with other frameworks. */ normalizeURL: function(opt) { var u = opt.url || ''; if( opt.urlParam ) { var addQ = (u.indexOf('?') >= 0) ? false : true; var addA = addQ ? false : ((u.indexOf('&')>=0) ? true : false); var tail = ''; if( WhAjaj.isObject(opt.urlParam) ) { var li = [], k; for( k in opt.urlParam) { li.push( k+'='+encodeURIComponent( opt.urlParam[k] ) ); } tail = li.join('&'); } else if( 'string' === typeof opt.urlParam ) { tail = opt.urlParam; } u = u + (addQ ? '?' : '') + (addA ? '&' : '') + tail; } return u; }, /** Should be called by WhAjaj.Connector.sendImpl() implementations after a response has come back. This function takes care of most of ensuring that framework-level conventions involving WhAjaj.Connector.options.ajax properties are followed. The request argument must be the original request passed to the sendImpl() function. It may legally be null for GET requests. The opt object should be the normalized AJAX options used for the connection. The resp argument may be either a plain Object or a string (in which case it is assumed to be JSON). The 'this' object for this call MUST be a WhAjaj.Connector instance in order for callback processing to work properly. This function takes care of the following: - Calling opt.afterSend() - If resp is a string, de-JSON-izing it to an object. - Calling opt.onResponse() - Calling opt.onError() in several common (potential) error cases. - If resp is-a String and opt.jsonp then resp is assumed to be a JSONP-form construct and is eval()d BEFORE opt.onResponse() is called. It is arguable to eval() it first, but the logic integrates better with the non-jsonp handler. The sendImpl() should return immediately after calling this. The sendImpl() must call only one of onSendSuccess() or onSendError(). It must call one of them or it must implement its own response/error handling, which is not recommended because getting the documented semantics of the onError/onResponse/afterSend handling correct can be tedious. */ onSendSuccess:function(request,resp,opt) { var cb = this.callbacks || {}; if( WhAjaj.isFunction(cb.afterSend) ) { try {cb.afterSend( request, opt );} catch(e){} } if( WhAjaj.isFunction(opt.afterSend) ) { try {opt.afterSend( request, opt );} catch(e){} } function doErr(){ if( WhAjaj.isFunction(cb.onError) ) { try {cb.onError( request, opt );} catch(e){} } if( WhAjaj.isFunction(opt.onError) ) { try {opt.onError( request, opt );} catch(e){} } } if( ! resp ) { opt.errorMessage = "Sending of request succeeded but returned no data!"; doErr(); return false; } if( 'string' === typeof resp ) { try { resp = opt.jsonp ? eval(resp) : JSON.parse(resp); } catch(e) { opt.errorMessage = e.toString(); doErr(); return; } } try { if( WhAjaj.isFunction( cb.onResponse ) ) { cb.onResponse( resp, request, opt ); } if( WhAjaj.isFunction( opt.onResponse ) ) { opt.onResponse( resp, request, opt ); } return true; } catch(e) { opt.errorMessage = "Exception while handling inbound JSON response:\n" + e +"\nOriginal response data:\n"+JSON.stringify(resp,0,2) ; ; doErr(); return false; } }, /** Should be called by sendImpl() implementations after a response has failed to connect (e.g. could not resolve host or timeout reached). This function takes care of most of ensuring that framework-level conventions involving WhAjaj.Connector.options.ajax properties are followed. The request argument must be the original request passed to the sendImpl() function. It may legally be null for GET requests. The 'this' object for this call MUST be a WhAjaj.Connector instance in order for callback processing to work properly. The opt object should be the normalized AJAX options used for the connection. By convention, the caller of this function "should" set opt.errorMessage to contain a human-readable description of the error. The sendImpl() should return immediately after calling this. The return value from this function is unspecified. */ onSendError: function(request,opt) { var cb = this.callbacks || {}; if( WhAjaj.isFunction(cb.afterSend) ) { try {cb.afterSend( request, opt );} catch(e){} } if( WhAjaj.isFunction(opt.afterSend) ) { try {opt.afterSend( request, opt );} catch(e){} } if( WhAjaj.isFunction( cb.onError ) ) { try {cb.onError( request, opt );} catch(e) {/*ignore*/} } if( WhAjaj.isFunction( opt.onError ) ) { try {opt.onError( request, opt );} catch(e) {/*ignore*/} } } }; /** WhAjaj.Connector.sendImpls holds several concrete implementations of WhAjaj.Connector.prototype.sendImpl(). To use a specific implementation by default assign WhAjaj.Connector.prototype.sendImpl to one of these functions. The functions defined here require that the 'this' object be-a WhAjaj.Connector instance. Historical notes: a) We once had an implementation based on Prototype, but that library just pisses me off (they change base-most types' prototypes, introducing side-effects in client code which doesn't even use Prototype). The Prototype version at the time had a serious toJSON() bug which caused empty arrays to serialize as the string "[]", which broke a bunch of my code. (That has been fixed in the mean time, but i don't use Prototype.) b) We once had an implementation for the dojo library, If/when the time comes to add Prototype/dojo support, we simply need to port: http://code.google.com/p/jsonmessage/source/browse/trunk/lib/JSONMessage/JSONMessage.inc.js (search that file for "dojo" and "Prototype") to this tree. That code is this code's generic grandfather and they are still very similar, so a port is trivial. */ WhAjaj.Connector.sendImpls = { /** This is a concrete implementation of WhAjaj.Connector.prototype.sendImpl() which uses the environment's native XMLHttpRequest class to send whiki requests and fetch the responses. The only argument must be a connection properties object, as constructed by WhAjaj.Connector.normalizeAjaxParameters(). If window.firebug is set then window.firebug.watchXHR() is called to enable monitoring of the XMLHttpRequest object. This implementation honors the loginName and loginPassword connection parameters. Returns the XMLHttpRequest object. This implementation requires that the 'this' object be-a WhAjaj.Connector. This implementation uses setTimeout() to implement the timeout support, and thus the JS engine must provide that functionality. */ XMLHttpRequest: function(request, args) { var json = WhAjaj.isObject(request) ? JSON.stringify(request) : request; var xhr = new XMLHttpRequest(); var startTime = (new Date()).getTime(); var timeout = args.timeout || 10000/*arbitrary!*/; var hitTimeout = false; var done = false; var tmid /* setTimeout() ID */; var whself = this; //if( json ) json = json.replace(/ö/g,"\\u00f6") /* ONLY FOR A SPECIFIC TEST */; //alert( 'json=\n'+json ); function handleTimeout() { hitTimeout = true; if( ! done ) { var now = (new Date()).getTime(); try { xhr.abort(); } catch(e) {/*ignore*/} // see: http://www.w3.org/TR/XMLHttpRequest/#the-abort-method args.errorMessage = "Timeout of "+timeout+"ms reached after "+(now-startTime)+"ms during AJAX request."; WhAjaj.Connector.sendHelper.onSendError.apply( whself, [request, args] ); } return; } function onStateChange() { // reminder to self: apparently 'this' is-not-a XHR :/ if( hitTimeout ) { /* we're too late - the error was already triggered. */ return; } if( 4 == xhr.readyState ) { done = true; if( tmid ) { clearTimeout( tmid ); tmid = null; } if( (xhr.status >= 200) && (xhr.status < 300) ) { WhAjaj.Connector.sendHelper.onSendSuccess.apply( whself, [request, xhr.responseText, args] ); return; } else { if( undefined === args.errorMessage ) { args.errorMessage = "Error sending a '"+args.method+"' AJAX request to " +"["+args.url+"]: " +"Status text=["+xhr.statusText+"]" ; WhAjaj.Connector.sendHelper.onSendError.apply( whself, [request, args] ); } else { /*maybe it was was set by the timeout handler. */ } return; } } }; xhr.onreadystatechange = onStateChange; if( ('undefined'!==(typeof window)) && ('firebug' in window) && ('watchXHR' in window.firebug) ) { /* plug in to firebug lite's XHR monitor... */ window.firebug.watchXHR( xhr ); } try { //alert( JSON.stringify( args )); function xhrOpen() { if( ('loginName' in args) && args.loginName ) { xhr.open( args.method, args.url, args.asynchronous, args.loginName, args.loginPassword ); } else { xhr.open( args.method, args.url, args.asynchronous ); } } if( json && ('POST' === args.method.toUpperCase()) ) { xhrOpen(); xhr.setRequestHeader("Content-Type", "application/json; charset=utf-8"); // Google Chrome warns that it refuses to set these // "unsafe" headers (his words, not mine): // xhr.setRequestHeader("Content-length", json.length); // xhr.setRequestHeader("Connection", "close"); xhr.send( json ); } else /* assume GET */ { xhrOpen(); xhr.send(null); } tmid = setTimeout( handleTimeout, timeout ); return xhr; } catch(e) { args.errorMessage = e.toString(); WhAjaj.Connector.sendHelper.onSendError.apply( whself, [request, args] ); return undefined; } }/*XMLHttpRequest()*/, /** This is a concrete implementation of WhAjaj.Connector.prototype.sendImpl() which uses the jQuery AJAX API to send requests and fetch the responses. The first argument may be either null/false, an Object containing toJSON-able data to post to the back-end, or such an object in JSON string form. The second argument must be a connection properties object, as constructed by WhAjaj.Connector.normalizeAjaxParameters(). If window.firebug is set then window.firebug.watchXHR() is called to enable monitoring of the XMLHttpRequest object. This implementation honors the loginName and loginPassword connection parameters. Returns the XMLHttpRequest object. This implementation requires that the 'this' object be-a WhAjaj.Connector. */ jQuery:function(request,args) { var data = request || undefined; var whself = this; if( data ) { if('string'!==typeof data) { try { data = JSON.stringify(data); } catch(e) { WhAjaj.Connector.sendHelper.onSendError.apply( whself, [request, args] ); return; } } } var ajopt = { url: args.url, data: data, type: args.method, async: args.asynchronous, password: (undefined !== args.loginPassword) ? args.loginPassword : undefined, username: (undefined !== args.loginName) ? args.loginName : undefined, contentType: 'application/json; charset=utf-8', error: function(xhr, textStatus, errorThrown) { //this === the options for this ajax request args.errorMessage = "Error sending a '"+ajopt.type+"' request to ["+ajopt.url+"]: " +"Status text=["+textStatus+"]" +(errorThrown ? ("Error=["+errorThrown+"]") : "") ; WhAjaj.Connector.sendHelper.onSendError.apply( whself, [request, args] ); }, success: function(data) { WhAjaj.Connector.sendHelper.onSendSuccess.apply( whself, [request, data, args] ); }, /* Set dataType=text instead of json to keep jQuery from doing our carefully written response handling for us. */ dataType: 'text' }; if( undefined !== args.timeout ) { ajopt.timeout = args.timeout; } try { return jQuery.ajax(ajopt); } catch(e) { args.errorMessage = e.toString(); WhAjaj.Connector.sendHelper.onSendError.apply( whself, [request, args] ); return undefined; } }/*jQuery()*/, /** This is a concrete implementation of WhAjaj.Connector.prototype.sendImpl() which uses the rhino Java API to send requests and fetch the responses. Limitations vis-a-vis the interface: - timeouts are not supported. - asynchronous mode is not supported because implementing it requires the ability to kill a running thread (which is deprecated in the Java API). TODOs: - add socket timeouts. - support HTTP proxy. The Java APIs support this, it just hasn't been added here yet. */ rhino:function(request,args) { var self = this; var data = request || undefined; if( data ) { if('string'!==typeof data) { try { data = JSON.stringify(data); } catch(e) { WhAjaj.Connector.sendHelper.onSendError.apply( self, [request, args] ); return; } } } var url; var con; var IO = new JavaImporter(java.io); var wr; var rd, ln, json = []; function setIncomingCookies(list){ if(!list || !list.length) return; if( !self.cookies ) self.cookies = {}; var k, v, i; for( i = 0; i < list.length; ++i ){ v = list[i].split('=',2); k = decodeURIComponent(v[0]) v = v[0] ? decodeURIComponent(v[0].split(';',2)[0]) : null; //print("RECEIVED COOKIE: "+k+"="+v); if(!v) { delete self.cookies[k]; continue; }else{ self.cookies[k] = v; } } }; function setOutboundCookies(conn){ if(!self.cookies) return; var k, v; for( k in self.cookies ){ if(!self.cookies.hasOwnProperty(k)) continue /*kludge for broken JS libs*/; v = self.cookies[k]; conn.addRequestProperty("Cookie", encodeURIComponent(k)+'='+encodeURIComponent(v)); //print("SENDING COOKIE: "+k+"="+v); } }; try{ url = new java.net.URL( args.url ) con = url.openConnection(/*FIXME: add proxy support!*/); con.setRequestProperty("Accept-Charset","utf-8"); setOutboundCookies(con); if(data){ con.setRequestProperty("Content-Type","application/json; charset=utf-8"); con.setDoOutput( true ); wr = new IO.OutputStreamWriter(con.getOutputStream()) wr.write(data); wr.flush(); wr.close(); wr = null; //print("POSTED: "+data); } rd = new IO.BufferedReader(new IO.InputStreamReader(con.getInputStream())); //var skippedHeaders = false; while ((line = rd.readLine()) !== null) { //print("LINE: "+line); //if(!line.length && !skippedHeaders){ // skippedHeaders = true; // json = []; // continue; //} json.push(line); } setIncomingCookies(con.getHeaderFields().get("Set-Cookie")); }catch(e){ args.errorMessage = e.toString(); WhAjaj.Connector.sendHelper.onSendError.apply( self, [request, args] ); return undefined; } try { if(wr) wr.close(); } catch(e) { /*ignore*/} try { if(rd) rd.close(); } catch(e) { /*ignore*/} json = json.join(''); //print("READ IN JSON: "+json); WhAjaj.Connector.sendHelper.onSendSuccess.apply( self, [request, json, args] ); }/*rhino*/ }; /** An internal function which takes an object containing properties for a WhAjaj.Connector network request. This function creates a new object containing a superset of the properties from: a) opt b) this.options c) WhAjaj.Connector.options.ajax in that order, using the first one it finds. All non-function properties are _deeply_ copied via JSON cloning in order to prevent accidental "cross-request pollenation" (been there, done that). Functions cannot be cloned and are simply copied by reference. This function throws if JSON-copying one of the options fails (e.g. due to cyclic data structures). Reminder to self: this function does not "normalize" opt.urlParam by encoding it into opt.url, mainly for historical reasons, but also because that behaviour was specifically undesirable in this code's genetic father. */ WhAjaj.Connector.prototype.normalizeAjaxParameters = function (opt) { var rc = {}; function merge(k,v) { if( rc.hasOwnProperty(k) ) return; else if( WhAjaj.isFunction(v) ) {} else if( WhAjaj.isObject(v) ) v = JSON.parse( JSON.stringify(v) ); rc[k]=v; } function cp(obj) { if( ! WhAjaj.isObject(obj) ) return; var k; for( k in obj ) { if( ! obj.hasOwnProperty(k) ) continue /* i will always hate the Prototype designers for this. */; merge(k, obj[k]); } } cp( opt ); cp( this.options ); cp( WhAjaj.Connector.options.ajax ); // no, not here: rc.url = WhAjaj.Connector.sendHelper.normalizeURL(rc); return rc; }; /** This is the generic interface for making calls to a back-end JSON-producing request handler. It is a simple wrapper around WhAjaj.Connector.prototype.sendImpl(), which just normalizes the connection options for sendImpl() and makes sure that opt.beforeSend() is (possibly) called. The request parameter must either be false/null/empty or a fully-populated JSON-able request object (which will be sent as unencoded application/json text), depending on the type of request being made. It is never semantically legal (in this API) for request to be a string/number/true/array value. As a rule, only POST requests use the request data. GET requests should encode their data in opt.url or opt.urlParam (see below). opt must contain the network-related parameters for the request. Paramters _not_ set in opt are pulled from this.options or WhAjaj.Connector.options.ajax (in that order, using the first value it finds). Thus the set of connection-level options used for the request are a superset of those various sources. The "normalized" (or "superimposed") opt object's URL may be modified before the request is sent, as follows: if opt.urlParam is a string then it is assumed to be properly URL-encoded parameters and is appended to the opt.url. If it is an Object then it is assumed to be a one-dimensional set of key/value pairs with simple values (numbers, strings, booleans, null, and NOT objects/arrays). The keys/values are URL-encoded and appended to the URL. The beforeSend() callback (see below) can modify the options object before the request attempt is made. The callbacks in the normalized opt object will be triggered as follows (if they are set to Function values): - beforeSend(request,opt) will be called before any network processing starts. If beforeSend() throws then no other callbacks are triggered and this function propagates the exception. This function is passed normalized connection options as its second parameter, and changes this function makes to that object _will_ be used for the pending connection attempt. - onError(request,opt) will be called if a connection to the back-end cannot be established. It will be passed the original request object (which might be null, depending on the request type) and the normalized options object. In the error case, the opt object passed to onError() "should" have a property called "errorMessage" which contains a description of the problem. - onError(request,opt) will also be called if connection succeeds but the response is not JSON data. - onResponse(response,request) will be called if the response returns JSON data. That data might hold an error response code - clients need to check for that. It is passed the response object (a plain object) and the original request object. - afterSend(request,opt) will be called directly after the AJAX request is finished, before onError() or onResonse() are called. Possible TODO: we explicitly do NOT pass the response to this function in order to keep the line between the responsibilities of the various callback clear (otherwise this could be used the same as onResponse()). In practice it would sometimes be useful have the response passed to this function, mainly for logging/debugging purposes. The return value from this function is meaningless because AJAX operations tend to take place asynchronously. */ WhAjaj.Connector.prototype.sendRequest = function(request,opt) { if( !WhAjaj.isFunction(this.sendImpl) ) { throw new Error("This object has no sendImpl() member function! I don't know how to send the request!"); } var ex = false; var av = Array.prototype.slice.apply( arguments, [0] ); /** FIXME: how to handle the error, vis-a-vis- the callbacks, if normalizeAjaxParameters() throws? It can throw if (de)JSON-izing fails. */ var norm = this.normalizeAjaxParameters( WhAjaj.isObject(opt) ? opt : {} ); norm.url = WhAjaj.Connector.sendHelper.normalizeURL(norm); if( ! request ) norm.method = 'GET'; var cb = this.callbacks || {}; if( this.callbacks && WhAjaj.isFunction(this.callbacks.beforeSend) ) { this.callbacks.beforeSend( request, norm ); } if( WhAjaj.isFunction(norm.beforeSend) ){ norm.beforeSend( request, norm ); } //alert( WhAjaj.stringify(request)+'\n'+WhAjaj.stringify(norm)); try { this.sendImpl( request, norm ); } catch(e) { ex = e; } if(ex) throw ex; }; /** sendImpl() holds a concrete back-end connection implementation. It can be replaced with a custom implementation if one follows the rules described throughout this API. See WhAjaj.Connector.sendImpls for the concrete implementations included with this API. */ //WhAjaj.Connector.prototype.sendImpl = WhAjaj.Connector.sendImpls.XMLHttpRequest; //WhAjaj.Connector.prototype.sendImpl = WhAjaj.Connector.sendImpls.rhino; //WhAjaj.Connector.prototype.sendImpl = WhAjaj.Connector.sendImpls.jQuery; if( 'undefined' !== typeof jQuery ){ WhAjaj.Connector.prototype.sendImpl = WhAjaj.Connector.sendImpls.jQuery; } else { WhAjaj.Connector.prototype.sendImpl = WhAjaj.Connector.sendImpls.XMLHttpRequest; } |
Added ajax/wiki-editor.html.
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <title>Fossil/JSON Wiki Editor Prototype</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script> <script type="text/javascript" src="js/whajaj.js"></script> <script type="text/javascript" src="js/fossil-ajaj.js"></script> <style type='text/css'> th { text-align: left; background-color: #ececec; } .dangerWillRobinson { background-color: yellow; } .wikiPageLink { text-decoration: underline; } </style> <script type='text/javascript'> WhAjaj.Connector.options.ajax.url = /* Change this to your CGI/server root path: */ //'http://fjson/cgi-bin/fossil.cgi' //'/repos/fossil-sgb/json.cgi' '/cgi-bin/fossil-json.cgi' ; var TheApp = { response:null, sessionID:null, jqe:{}/*jqe==jQuery Elements*/, ajaxCount:0, cgi: new FossilAjaj(), pages:{} }; TheApp.startAjaxNotif = function() { ++this.ajaxCount; TheApp.jqe.responseContainer.removeClass('dangerWillRobinson'); this.jqe.ajaxNotification.attr( 'title', this.ajaxCount+" pending AJAX operation(s)..." ); if( 1 == this.ajaxCount ) this.jqe.ajaxNotification.fadeIn(); }; TheApp.endAjaxNotif = function() { --this.ajaxCount; this.jqe.ajaxNotification.attr( 'title', this.ajaxCount+" pending AJAX operation(s)..." ); if( 0 == this.ajaxCount ) this.jqe.ajaxNotification.fadeOut(); }; TheApp.responseContainsError = function(resp) { if( !resp || resp.resultCode ) { //alert("Error response:\n"+JSON.stringify(resp,0,4)); TheApp.jqe.taResponse.val( "RESPONSE CONTAINS ERROR INFO:\n"+WhAjaj.stringify(resp) ); //TheApp.jqe.responseContainer.css({backgroundColor:'yellow'}); //TheApp.jqe.responseContainer.addClass('dangerWillRobinson'); TheApp.jqe.responseContainer.flash( '255,0,0', 1500 ); return true; } return false; }; TheApp.sendRequest = function() { var path = this.jqe.textPath.val(); var self = this; var data = this.jqe.pageListArea.val(); var doPost = (data && data.length); var req; if( doPost ) try { req = JSON.parse(data); } catch(e) { TheApp.jqe.taResponse.val("Request is not valid JSON.\n"+e); return; } if( req ) { req.requestId = this.cgi.generateRequestId(); } var self = this; var opt = { url: WhAjaj.Connector.options.ajax.url + path, method: doPost ? 'POST' : 'GET' }; this.cgi.sendRequest( req, opt ); }; jQuery.fn.animateHighlight = function(highlightColor, duration) { var highlightBg = highlightColor || "#FFFF9C"; var animateMs = duration || 1500; var originalBg = this.css("backgroundColor"); this.stop().css("background-color", highlightBg).animate({backgroundColor: originalBg}, animateMs); }; jQuery.fn.flash = function( color, duration ) { var current = this.css( 'color' ); this.animate( { color: 'rgb(' + color + ')' }, duration / 2); this.animate( { color: current }, duration / 2 ); }; jQuery(document).ready(function(){ var ids = [ 'btnSend', 'ajaxNotification', 'currentAuthToken', 'responseContainer', 'spanPageName', 'pageListArea', 'taPageContent', 'taResponse', 'textPath', // list of HTML element IDs we use often. 'timer' ]; var i, k; for( i = 0; i < ids.length; ++i ) { k = ids[i]; TheApp.jqe[k] = jQuery('#'+k); } TheApp.jqe.textPath. keyup(function(event){ if(event.keyCode == 13){ TheApp.sendRequest(); } }); TheApp.timer = { _tstart:0,_tend:0,duration:0, start:function(){ this._tstart = (new Date()).getTime(); }, end:function(){ this._tend = (new Date()).getTime(); return this.duration = this._tend - this._tstart; } }; var ajcb = TheApp.cgi.ajaj.callbacks; ajcb.beforeSend = TheApp.beforeSend = function(req,opt) { TheApp.timer.start(); var val = req ? (('string'===typeof req) ? req : WhAjaj.stringify(req)) : ''; TheApp.jqe.taResponse.val(''); TheApp.startAjaxNotif(); }; ajcb.afterSend = TheApp.afterSend = function(req,opt) { TheApp.timer.end(); TheApp.endAjaxNotif(); TheApp.jqe.timer.text( "(Round-trip time: "+TheApp.timer.duration+'ms)' ); }; ajcb.onResponse = TheApp.onResponse = function(resp,req) { var val; try { val = WhAjaj.stringify(resp); } catch(e) { val = WhAjaj.stringify(e) } if(resp.resultCode){ alert("Response contains error info:\n"+val); } TheApp.jqe.taResponse.val( val ); }; ajcb.onError = function(req,opt) { TheApp.jqe.taResponse.val( "ERROR SENDING REQUEST:\n"+WhAjaj.stringify(opt) ); }; TheApp.jqe.taPageContent.blur(function(){ var p = TheApp.currentPage; if(! p ) return; p.content = TheApp.jqe.taPageContent.val(); }); TheApp.cgi.onLogin = function(){ TheApp.jqe.taResponse.val( "Logged in: "+WhAjaj.stringify(this.auth)); TheApp.jqe.currentAuthToken.text("Logged in: "+WhAjaj.stringify(this.auth)); }; TheApp.cgi.onLogout = function(){ TheApp.jqe.taResponse.val( "Logged out!" ); TheApp.jqe.currentAuthToken.text(""); }; TheApp.showPage = function(name){ function doShow(page){ TheApp.currentPage = page; TheApp.jqe.spanPageName.text('('+page.name+')'); TheApp.jqe.taPageContent.val(page.content); } var p = ('object' === typeof name) ? name : TheApp.pages[name]; if(('object' === typeof p) && p.content) { doShow(p); return; } TheApp.cgi.sendCommand('/json/wiki/get',{ name:name },{ onResponse:function(resp,req){ TheApp.onResponse(resp,req); if(resp.resultCode) return; var p = resp.payload; doShow( TheApp.pages[p.name] = p ); } }); }; TheApp.refreshPageListView = function(){ var list = (function(){ var k, v, li = []; for( k in TheApp.pages ){ if(!TheApp.pages.hasOwnProperty(k)) continue; li.push(k); } return li; })(); var i, p, a, tgt = TheApp.jqe.pageListArea; tgt.text(''); function makeLink(name){ var link = jQuery('<span></span>'); link.text(name); link.addClass('wikiPageLink'); link.click(function(e){ TheApp.showPage(name); e.preventDefault(); return false; }); return link; } list.sort(); for( i = 0; i < list.length; ++i ){ tgt.append(makeLink(list[i])); tgt.append('<br/>'); } }; TheApp.loadPageList = function(){ TheApp.cgi.sendCommand('/json/wiki/list',null,{ onResponse:function(resp,req){ TheApp.onResponse(resp,req); if(resp.resultCode) return; var i, v, p, ar = resp.payload; for( i = 0; i < ar.length; ++i ){ v = ar[i]; p = TheApp.pages[v]; if( !p ) TheApp.pages[v] = {name:v}; } TheApp.refreshPageListView(); } }); return false /*for click handlers*/; } TheApp.savePage = function(p){ p = p || TheApp.currentPage; if( 'object' !== typeof p ){ p = TheApp.pages[p]; } if('object' !== typeof p){ alert("savePage() argument is not a page object or known page name."); } TheApp.pages[p.name] = p; p.content = TheApp.jqe.taPageContent.val(); var req = { name:p.name, content:p.content }; if(! confirm("Really save wiki page ["+p.name+"]?") ) return; TheApp.cgi.sendCommand('/json/wiki/'+(p.isNew?'create':'save'),req,{ onResponse:function(resp,req){ TheApp.onResponse(resp,req); if(resp.resultCode) return; delete p.isNew; p.timestamp = resp.payload.timestamp; } }); }; TheApp.createNewPage = function(){ var name = prompt("New page name?"); if(!name) return; var p = { name:name, content:"New, empty page.", isNew:true }; TheApp.pages[name] = p; TheApp.refreshPageListView(); TheApp.showPage(p); /* if(! confirm("Really create new wiki page ["+name+"]?") ) return; TheApp.cgi.sendCommand('/json/wiki/create',req,{ onResponse:function(resp,req){ TheApp.onResponse(resp,req); if(resp.resultCode) return; TheApp.pages[p.name] = p; TheApp.refreshPageListView(); } }); */ }; TheApp.cgi.whoami(); }); </script> </head> <body> <span id='ajaxNotification'></span> <h1>PROTOTYPE JSON-based Fossil Wiki Editor</h1> See also: <a href='index.html'>main test page</a>. <br> <b>Login:</b> <br/> <input type='button' value='Anon. Login' onclick='TheApp.cgi.login()' /> or: name:<input type='text' id='textUser' value='json-demo' size='12'/> pw:<input type='password' id='textPassword' value='json-demo' size='12'/> <input type='button' value='login' onclick='TheApp.cgi.login(jQuery("#textUser").val(),jQuery("#textPassword").val(),{onResponse:TheApp.onLogin})' /> <input type='button' value='logout' onclick='TheApp.cgi.logout()' /> <br/> <span id='currentAuthToken' style='font-family:monospaced'></span> <hr/> <strong>Quick-posts:</strong><br/> <input type='button' value='HAI' onclick='TheApp.cgi.HAI()' /> <input type='button' value='stat' onclick='TheApp.cgi.sendCommand("/json/stat")' /> <input type='button' value='whoami' onclick='TheApp.cgi.whoami()' /> <input type='button' value='wiki/list' onclick='TheApp.loadPageList()' /> <!-- <input type='button' value='timeline/ci' onclick='TheApp.cgi.sendCommand("/json/timeline/ci")' /> --> <!-- <input type='button' value='get whiki' onclick='TheApp.cgi.getPages("whiki")' /> <input type='button' value='get more' onclick='TheApp.cgi.getPages("HelloWorld/WhikiNews")' /> <input type='button' value='get client data' onclick='TheApp.cgi.getPageClientData("HelloWorld/whiki/WhikiCommands")' /> <input type='button' value='save client data' onclick='TheApp.cgi.savePageClientData({"HelloWorld":[1,3,5]})' /> --> <hr/> <table> <tr> <th>Page List</th> <th>Content <span id='spanPageName'></span></th> </tr> <tr> <td width='25%' valign='top'> <input type='button' value='Create new...' onclick='TheApp.createNewPage()' /><br/> <div id='pageListArea'></div> </td> <td width='75%' valign='top'> <input type='button' value='Save' onclick='TheApp.savePage()' /><br/> <textarea id='taPageContent' rows='20' cols='60'></textarea> </td> </tr> <tr> <th colspan='2'>Response <span id='timer'></span></th> </tr> <tr> <td colspan='2' id='responseContainer'> <textarea id='taResponse' rows='20' cols='80' readonly></textarea> </td> </tr> </table> <div></div> <div></div> <div></div> </body></html> |
Changes to auto.def.
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=> {Look for openssl in the given path, or auto or none}
with-zlib:path => {Look for zlib in the given path}
with-tcl:path => {Enable Tcl integration, with Tcl in the specified path}
internal-sqlite=1 => {Don't use the internal sqlite, use the system one}
static=0 => {Link a static executable}
lineedit=1 => {Disable line editing}
fossil-debug=0 => {Build with fossil debugging enabled}
}
# sqlite wants these types if possible
cc-with {-includes {stdint.h inttypes.h}} {
cc-check-types uint32_t uint16_t int16_t uint8_t
}
................................................................................
find_internal_sqlite
}
if {[opt-bool fossil-debug]} {
define-append EXTRA_CFLAGS -DFOSSIL_DEBUG
}
if {[opt-bool static]} {
# XXX: This will not work on all systems.
define-append EXTRA_LDFLAGS -static
}
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=> {Look for openssl in the given path, or auto or none} with-zlib:path => {Look for zlib in the given path} with-tcl:path => {Enable Tcl integration, with Tcl in the specified path} internal-sqlite=1 => {Don't use the internal sqlite, use the system one} static=0 => {Link a static executable} lineedit=1 => {Disable line editing} fossil-debug=0 => {Build with fossil debugging enabled} json=0 => {Build with fossil JSON API enabled} } # sqlite wants these types if possible cc-with {-includes {stdint.h inttypes.h}} { cc-check-types uint32_t uint16_t int16_t uint8_t } ................................................................................ find_internal_sqlite } if {[opt-bool fossil-debug]} { define-append EXTRA_CFLAGS -DFOSSIL_DEBUG } if {[opt-bool json]} { define-append EXTRA_CFLAGS -DFOSSIL_ENABLE_JSON } if {[opt-bool static]} { # XXX: This will not work on all systems. define-append EXTRA_LDFLAGS -static } |
Added src/Makefile.
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all: $(MAKE) -C .. |
Changes to src/blob.c.
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if( z[i]=='"' ) z[i] = '_'; } return; } } blob_append(pBlob, zIn, -1); } |
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if( z[i]=='"' ) z[i] = '_'; } return; } } blob_append(pBlob, zIn, -1); } /* ** A read(2)-like impl for the Blob class. Reads (copies) up to nLen ** bytes from pIn, starting at position pIn->iCursor, and copies them ** to pDest (which must be valid memory at least nLen bytes long). ** ** Returns the number of bytes read/copied, which may be less than ** nLen (if end-of-blob is encountered). ** ** Updates pIn's cursor. ** ** Returns 0 if pIn contains no data. */ unsigned int blob_read(Blob *pIn, void * pDest, unsigned int nLen ){ if( !pIn->aData || (pIn->iCursor >= pIn->nUsed) ){ return 0; } else if( (pIn->iCursor + nLen) > (unsigned int)pIn->nUsed ){ nLen = (unsigned int) (pIn->nUsed - pIn->iCursor); } assert( pIn->nUsed > pIn->iCursor ); assert( (pIn->iCursor+nLen) <= pIn->nUsed ); if( nLen ){ memcpy( pDest, pIn->aData, nLen ); pIn->iCursor += nLen; } return nLen; } |
Changes to src/branch.c.
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db_end_transaction(0); /* Do an autosync push, if requested */ if( !isPrivate ) autosync(AUTOSYNC_PUSH); } /* ** Prepare a query that will list all branches. */ static void prepareBranchQuery(Stmt *pQuery, int showAll, int showClosed){ if( showClosed ){ db_prepare(pQuery, "SELECT value FROM tagxref" " WHERE tagid=%d AND value NOT NULL " "EXCEPT " "SELECT value FROM tagxref" " WHERE tagid=%d" " AND rid IN leaf" " AND NOT %z" " ORDER BY value COLLATE nocase /*sort*/", TAG_BRANCH, TAG_BRANCH, leaf_is_closed_sql("tagxref.rid") ); }else if( showAll ){ db_prepare(pQuery, "SELECT DISTINCT value FROM tagxref" " WHERE tagid=%d AND value NOT NULL" " AND rid IN leaf" " ORDER BY value COLLATE nocase /*sort*/", TAG_BRANCH ); ................................................................................ int showClosed = find_option("closed",0,0)!=0; if( g.localOpen ){ vid = db_lget_int("checkout", 0); zCurrent = db_text(0, "SELECT value FROM tagxref" " WHERE rid=%d AND tagid=%d", vid, TAG_BRANCH); } prepareBranchQuery(&q, showAll, showClosed); while( db_step(&q)==SQLITE_ROW ){ const char *zBr = db_column_text(&q, 0); int isCur = zCurrent!=0 && fossil_strcmp(zCurrent,zBr)==0; fossil_print("%s%s\n", (isCur ? "* " : " "), zBr); } db_finalize(&q); }else{ ................................................................................ @ <div class="sideboxDescribed"><a href="leaves?closed"> @ closed leaves</a></div>. @ Closed branches are fixed and do not change (unless they are first @ reopened)</li> @ </ol> style_sidebox_end(); prepareBranchQuery(&q, showAll, showClosed); cnt = 0; while( db_step(&q)==SQLITE_ROW ){ const char *zBr = db_column_text(&q, 0); if( cnt==0 ){ if( colorTest ){ @ <h2>Default background colors for all branches:</h2> }else if( showAll ){ |
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db_end_transaction(0); /* Do an autosync push, if requested */ if( !isPrivate ) autosync(AUTOSYNC_PUSH); } /* ** Prepare a query that will list branches. ** ** If (which<0) then the query pulls only closed branches. If ** (which>0) then the query pulls all (closed and opened) ** branches. Else the query pulls currently-opened branches. */ void branch_prepare_list_query(Stmt *pQuery, int which ){ if( which < 0 ){ db_prepare(pQuery, "SELECT value FROM tagxref" " WHERE tagid=%d AND value NOT NULL " "EXCEPT " "SELECT value FROM tagxref" " WHERE tagid=%d" " AND rid IN leaf" " AND NOT %z" " ORDER BY value COLLATE nocase /*sort*/", TAG_BRANCH, TAG_BRANCH, leaf_is_closed_sql("tagxref.rid") ); }else if( which>0 ){ db_prepare(pQuery, "SELECT DISTINCT value FROM tagxref" " WHERE tagid=%d AND value NOT NULL" " AND rid IN leaf" " ORDER BY value COLLATE nocase /*sort*/", TAG_BRANCH ); ................................................................................ int showClosed = find_option("closed",0,0)!=0; if( g.localOpen ){ vid = db_lget_int("checkout", 0); zCurrent = db_text(0, "SELECT value FROM tagxref" " WHERE rid=%d AND tagid=%d", vid, TAG_BRANCH); } branch_prepare_list_query(&q, showAll?1:(showClosed?-1:0)); while( db_step(&q)==SQLITE_ROW ){ const char *zBr = db_column_text(&q, 0); int isCur = zCurrent!=0 && fossil_strcmp(zCurrent,zBr)==0; fossil_print("%s%s\n", (isCur ? "* " : " "), zBr); } db_finalize(&q); }else{ ................................................................................ @ <div class="sideboxDescribed"><a href="leaves?closed"> @ closed leaves</a></div>. @ Closed branches are fixed and do not change (unless they are first @ reopened)</li> @ </ol> style_sidebox_end(); branch_prepare_list_query(&q, showAll?1:(showClosed?-1:0)); cnt = 0; while( db_step(&q)==SQLITE_ROW ){ const char *zBr = db_column_text(&q, 0); if( cnt==0 ){ if( colorTest ){ @ <h2>Default background colors for all branches:</h2> }else if( showAll ){ |
Changes to src/captcha.c.
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sqlite3_randomness(sizeof(x), &x); x &= 0x7fffffff; return x; } /* ** Translate a captcha seed value into the captcha password string. */ char *captcha_decode(unsigned int seed){ const char *zSecret; const char *z; Blob b; static char zRes[20]; zSecret = db_get("captcha-secret", 0); if( zSecret==0 ){ |
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sqlite3_randomness(sizeof(x), &x); x &= 0x7fffffff; return x; } /* ** Translate a captcha seed value into the captcha password string. ** The returned string is static and overwritten on each call to ** this function. */ char const *captcha_decode(unsigned int seed){ const char *zSecret; const char *z; Blob b; static char zRes[20]; zSecret = db_get("captcha-secret", 0); if( zSecret==0 ){ |
Changes to src/cgi.c.
506 507 508 509 510 511 512 513 514 515 516 517 518 519 ... 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 ... 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 ... 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 ... 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 |
}else{ if( *z ){ *z++ = 0; } zValue = ""; } if( fossil_islower(zName[0]) ){ cgi_set_parameter_nocopy(zName, zValue); } } } /* ** *pz is a string that consists of multiple lines of text. This ** routine finds the end of the current line of text and converts ** the "\n" or "\r\n" that ends that line into a "\000". It then ................................................................................ cgi_set_parameter_nocopy(mprintf("%s:mimetype",zName), z); } } } } } } /* ** Initialize the query parameter database. Information is pulled from ** the QUERY_STRING environment variable (if it exists), from standard ** input if there is POST data, and from HTTP_COOKIE. */ void cgi_init(void){ char *z; const char *zType; int len; cgi_destination(CGI_BODY); z = (char*)P("QUERY_STRING"); if( z ){ z = mprintf("%s",z); add_param_list(z, '&'); } z = (char*)P("REMOTE_ADDR"); if( z ) g.zIpAddr = mprintf("%s", z); len = atoi(PD("CONTENT_LENGTH", "0")); g.zContentType = zType = P("CONTENT_TYPE"); if( len>0 && zType ){ blob_zero(&g.cgiIn); if( fossil_strcmp(zType,"application/x-www-form-urlencoded")==0 || strncmp(zType,"multipart/form-data",19)==0 ){ ................................................................................ blob_read_from_channel(&g.cgiIn, g.httpIn, len); blob_uncompress(&g.cgiIn, &g.cgiIn); }else if( fossil_strcmp(zType, "application/x-fossil-debug")==0 ){ blob_read_from_channel(&g.cgiIn, g.httpIn, len); }else if( fossil_strcmp(zType, "application/x-fossil-uncompressed")==0 ){ blob_read_from_channel(&g.cgiIn, g.httpIn, len); } } z = (char*)P("HTTP_COOKIE"); if( z ){ z = mprintf("%s",z); add_param_list(z, ';'); } } /* ** This is the comparison function used to sort the aParamQP[] array of ** query parameters and cookies. */ static int qparam_compare(const void *a, const void *b){ ................................................................................ /* ** Panic and die while processing a webpage. */ NORETURN void cgi_panic(const char *zFormat, ...){ va_list ap; cgi_reset_content(); cgi_set_status(500, "Internal Server Error"); cgi_printf( "<html><body><h1>Internal Server Error</h1>\n" "<plaintext>" ); va_start(ap, zFormat); vxprintf(pContent,zFormat,ap); va_end(ap); cgi_reply(); fossil_exit(1); } /* ** Remove the first space-delimited token from a string and return ** a pointer to it. Add a NULL to the string to terminate the token. ** Make *zLeftOver point to the start of the next token. */ ................................................................................ */ void cgi_handle_http_request(const char *zIpAddr){ char *z, *zToken; int i; struct sockaddr_in remoteName; socklen_t size = sizeof(struct sockaddr_in); char zLine[2000]; /* A single line of input. */ g.fullHttpReply = 1; if( fgets(zLine, sizeof(zLine),g.httpIn)==0 ){ malformed_request(); } zToken = extract_token(zLine, &z); if( zToken==0 ){ malformed_request(); |
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | > > > > > > > > | > > > | < < < > > | | > > > > > > > > > > > > > > > > > > > > > > | | | | | | | | | | > < |
506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 ... 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 ... 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 .... 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 .... 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 |
}else{ if( *z ){ *z++ = 0; } zValue = ""; } if( fossil_islower(zName[0]) ){ cgi_set_parameter_nocopy(zName, zValue); } #ifdef FOSSIL_ENABLE_JSON json_setenv( zName, cson_value_new_string(zValue,strlen(zValue)) ); #endif /* FOSSIL_ENABLE_JSON */ } } /* ** *pz is a string that consists of multiple lines of text. This ** routine finds the end of the current line of text and converts ** the "\n" or "\r\n" that ends that line into a "\000". It then ................................................................................ cgi_set_parameter_nocopy(mprintf("%s:mimetype",zName), z); } } } } } } #ifdef FOSSIL_ENABLE_JSON /* ** Internal helper for cson_data_source_FILE_n(). */ typedef struct CgiPostReadState_ { FILE * fh; unsigned int len; unsigned int pos; } CgiPostReadState; /* ** cson_data_source_f() impl which reads only up to ** a specified amount of data from its input FILE. ** state MUST be a full populated (CgiPostReadState*). */ static int cson_data_source_FILE_n( void * state, void * dest, unsigned int * n ){ if( ! state || !dest || !n ) return cson_rc.ArgError; else { CgiPostReadState * st = (CgiPostReadState *)state; if( st->pos >= st->len ){ *n = 0; return 0; } else if( !*n || ((st->pos + *n) > st->len) ){ return cson_rc.RangeError; }else{ unsigned int rsz = (unsigned int)fread( dest, 1, *n, st->fh ); if( ! rsz ){ *n = rsz; return feof(st->fh) ? 0 : cson_rc.IOError; }else{ *n = rsz; st->pos += *n; return 0; } } } } /* ** Reads a JSON object from the first contentLen bytes of zIn. On ** g.json.post is updated to hold the content. On error a ** FSL_JSON_E_INVALID_REQUEST response is output and fossil_exit() is ** called (in HTTP mode exit code 0 is used). ** ** If contentLen is 0 then the whole file is read. */ void cgi_parse_POST_JSON( FILE * zIn, unsigned int contentLen ){ cson_value * jv = NULL; int rc; CgiPostReadState state; state.fh = zIn; state.len = contentLen; state.pos = 0; rc = cson_parse( &jv, contentLen ? cson_data_source_FILE_n : cson_data_source_FILE, contentLen ? (void *)&state : (void *)zIn, NULL, NULL ); if(rc){ goto invalidRequest; }else{ json_gc_add( "POST.JSON", jv ); g.json.post.v = jv; g.json.post.o = cson_value_get_object( jv ); if( !g.json.post.o ){ /* we don't support non-Object (Array) requests */ goto invalidRequest; } } return; invalidRequest: cgi_set_content_type(json_guess_content_type()); json_err( FSL_JSON_E_INVALID_REQUEST, NULL, 1 ); fossil_exit( g.isHTTP ? 0 : 1); } #endif /* FOSSIL_ENABLE_JSON */ /* ** Initialize the query parameter database. Information is pulled from ** the QUERY_STRING environment variable (if it exists), from standard ** input if there is POST data, and from HTTP_COOKIE. */ void cgi_init(void){ char *z; const char *zType; int len; #ifdef FOSSIL_ENABLE_JSON json_main_bootstrap(); #endif g.isHTTP = 1; cgi_destination(CGI_BODY); z = (char*)P("HTTP_COOKIE"); if( z ){ z = mprintf("%s",z); add_param_list(z, ';'); } z = (char*)P("QUERY_STRING"); if( z ){ z = mprintf("%s",z); add_param_list(z, '&'); } z = (char*)P("REMOTE_ADDR"); if( z ){ g.zIpAddr = mprintf("%s", z); } len = atoi(PD("CONTENT_LENGTH", "0")); g.zContentType = zType = P("CONTENT_TYPE"); if( len>0 && zType ){ blob_zero(&g.cgiIn); if( fossil_strcmp(zType,"application/x-www-form-urlencoded")==0 || strncmp(zType,"multipart/form-data",19)==0 ){ ................................................................................ blob_read_from_channel(&g.cgiIn, g.httpIn, len); blob_uncompress(&g.cgiIn, &g.cgiIn); }else if( fossil_strcmp(zType, "application/x-fossil-debug")==0 ){ blob_read_from_channel(&g.cgiIn, g.httpIn, len); }else if( fossil_strcmp(zType, "application/x-fossil-uncompressed")==0 ){ blob_read_from_channel(&g.cgiIn, g.httpIn, len); } #ifdef FOSSIL_ENABLE_JSON else if( fossil_strcmp(zType, "application/json") || fossil_strcmp(zType,"text/plain")/*assume this MIGHT be JSON*/ || fossil_strcmp(zType,"application/javascript")){ g.json.isJsonMode = 1; cgi_parse_POST_JSON(g.httpIn, (unsigned int)len); /* FIXMEs: - See if fossil really needs g.cgiIn to be set for this purpose (i don't think it does). If it does then fill g.cgiIn and refactor to parse the JSON from there. - After parsing POST JSON, copy the "first layer" of keys/values to cgi_setenv(), honoring the upper-case distinction used in add_param_list(). However... - If we do that then we might get a disconnect in precedence of GET/POST arguments. i prefer for GET entries to take precedence over like-named POST entries, but in order for that to happen we need to process QUERY_STRING _after_ reading the POST data. */ cgi_set_content_type(json_guess_content_type()); } #endif /* FOSSIL_ENABLE_JSON */ } } /* ** This is the comparison function used to sort the aParamQP[] array of ** query parameters and cookies. */ static int qparam_compare(const void *a, const void *b){ ................................................................................ /* ** Panic and die while processing a webpage. */ NORETURN void cgi_panic(const char *zFormat, ...){ va_list ap; cgi_reset_content(); #ifdef FOSSIL_ENABLE_JSON if( g.json.isJsonMode ){ char * zMsg; va_start(ap, zFormat); zMsg = vmprintf(zFormat,ap); va_end(ap); json_err( FSL_JSON_E_PANIC, zMsg, 1 ); free(zMsg); fossil_exit( g.isHTTP ? 0 : 1 ); }else #endif /* FOSSIL_ENABLE_JSON */ { cgi_set_status(500, "Internal Server Error"); cgi_printf( "<html><body><h1>Internal Server Error</h1>\n" "<plaintext>" ); va_start(ap, zFormat); vxprintf(pContent,zFormat,ap); va_end(ap); cgi_reply(); fossil_exit(1); } } /* ** Remove the first space-delimited token from a string and return ** a pointer to it. Add a NULL to the string to terminate the token. ** Make *zLeftOver point to the start of the next token. */ ................................................................................ */ void cgi_handle_http_request(const char *zIpAddr){ char *z, *zToken; int i; struct sockaddr_in remoteName; socklen_t size = sizeof(struct sockaddr_in); char zLine[2000]; /* A single line of input. */ g.fullHttpReply = 1; if( fgets(zLine, sizeof(zLine),g.httpIn)==0 ){ malformed_request(); } zToken = extract_token(zLine, &z); if( zToken==0 ){ malformed_request(); |
Added src/cson_amalgamation.c.
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> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > 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#ifdef FOSSIL_ENABLE_JSON /* auto-generated! Do not edit! */ #include "cson_amalgamation.h" /* begin file parser/JSON_parser.h */ /* See JSON_parser.c for copyright information and licensing. */ #ifndef JSON_PARSER_H #define JSON_PARSER_H /* JSON_parser.h */ #include <stddef.h> /* Windows DLL stuff */ #ifdef JSON_PARSER_DLL # ifdef _MSC_VER # ifdef JSON_PARSER_DLL_EXPORTS # define JSON_PARSER_DLL_API __declspec(dllexport) # else # define JSON_PARSER_DLL_API __declspec(dllimport) # endif # else # define JSON_PARSER_DLL_API # endif #else # define JSON_PARSER_DLL_API #endif /* Determine the integer type use to parse non-floating point numbers */ #if __STDC_VERSION__ >= 199901L || HAVE_LONG_LONG == 1 typedef long long JSON_int_t; #define JSON_PARSER_INTEGER_SSCANF_TOKEN "%lld" #define JSON_PARSER_INTEGER_SPRINTF_TOKEN "%lld" #else typedef long JSON_int_t; #define JSON_PARSER_INTEGER_SSCANF_TOKEN "%ld" #define JSON_PARSER_INTEGER_SPRINTF_TOKEN "%ld" #endif #ifdef __cplusplus extern "C" { #endif typedef enum { JSON_E_NONE = 0, JSON_E_INVALID_CHAR, JSON_E_INVALID_KEYWORD, JSON_E_INVALID_ESCAPE_SEQUENCE, JSON_E_INVALID_UNICODE_SEQUENCE, JSON_E_INVALID_NUMBER, JSON_E_NESTING_DEPTH_REACHED, JSON_E_UNBALANCED_COLLECTION, JSON_E_EXPECTED_KEY, JSON_E_EXPECTED_COLON, JSON_E_OUT_OF_MEMORY } JSON_error; typedef enum { JSON_T_NONE = 0, JSON_T_ARRAY_BEGIN, JSON_T_ARRAY_END, JSON_T_OBJECT_BEGIN, JSON_T_OBJECT_END, JSON_T_INTEGER, JSON_T_FLOAT, JSON_T_NULL, JSON_T_TRUE, JSON_T_FALSE, JSON_T_STRING, JSON_T_KEY, JSON_T_MAX } JSON_type; typedef struct JSON_value_struct { union { JSON_int_t integer_value; double float_value; struct { const char* value; size_t length; } str; } vu; } JSON_value; typedef struct JSON_parser_struct* JSON_parser; /*! \brief JSON parser callback \param ctx The pointer passed to new_JSON_parser. \param type An element of JSON_type but not JSON_T_NONE. \param value A representation of the parsed value. This parameter is NULL for JSON_T_ARRAY_BEGIN, JSON_T_ARRAY_END, JSON_T_OBJECT_BEGIN, JSON_T_OBJECT_END, JSON_T_NULL, JSON_T_TRUE, and JSON_T_FALSE. String values are always returned as zero-terminated C strings. \return Non-zero if parsing should continue, else zero. */ typedef int (*JSON_parser_callback)(void* ctx, int type, const struct JSON_value_struct* value); /** A typedef for allocator functions semantically compatible with malloc(). */ typedef void* (*JSON_malloc_t)(size_t n); /** A typedef for deallocator functions semantically compatible with free(). */ typedef void (*JSON_free_t)(void* mem); /*! \brief The structure used to configure a JSON parser object */ typedef struct { /** Pointer to a callback, called when the parser has something to tell the user. This parameter may be NULL. In this case the input is merely checked for validity. */ JSON_parser_callback callback; /** Callback context - client-specified data to pass to the callback function. This parameter may be NULL. */ void* callback_ctx; /** Specifies the levels of nested JSON to allow. Negative numbers yield unlimited nesting. If negative, the parser can parse arbitrary levels of JSON, otherwise the depth is the limit. */ int depth; /** To allow C style comments in JSON, set to non-zero. */ int allow_comments; /** To decode floating point numbers manually set this parameter to non-zero. */ int handle_floats_manually; /** The memory allocation routine, which must be semantically compatible with malloc(3). If set to NULL, malloc(3) is used. If this is set to a non-NULL value then the 'free' member MUST be set to the proper deallocation counterpart for this function. Failure to do so results in undefined behaviour at deallocation time. */ JSON_malloc_t malloc; /** The memory deallocation routine, which must be semantically compatible with free(3). If set to NULL, free(3) is used. If this is set to a non-NULL value then the 'alloc' member MUST be set to the proper allocation counterpart for this function. Failure to do so results in undefined behaviour at deallocation time. */ JSON_free_t free; } JSON_config; /*! \brief Initializes the JSON parser configuration structure to default values. The default configuration is - 127 levels of nested JSON (depends on JSON_PARSER_STACK_SIZE, see json_parser.c) - no parsing, just checking for JSON syntax - no comments - Uses realloc() for memory de/allocation. \param config. Used to configure the parser. */ JSON_PARSER_DLL_API void init_JSON_config(JSON_config * config); /*! \brief Create a JSON parser object \param config. Used to configure the parser. Set to NULL to use the default configuration. See init_JSON_config. Its contents are copied by this function, so it need not outlive the returned object. \return The parser object, which is owned by the caller and must eventually be freed by calling delete_JSON_parser(). */ JSON_PARSER_DLL_API JSON_parser new_JSON_parser(JSON_config const* config); /*! \brief Destroy a previously created JSON parser object. */ JSON_PARSER_DLL_API void delete_JSON_parser(JSON_parser jc); /*! \brief Parse a character. \return Non-zero, if all characters passed to this function are part of are valid JSON. */ JSON_PARSER_DLL_API int JSON_parser_char(JSON_parser jc, int next_char); /*! \brief Finalize parsing. Call this method once after all input characters have been consumed. \return Non-zero, if all parsed characters are valid JSON, zero otherwise. */ JSON_PARSER_DLL_API int JSON_parser_done(JSON_parser jc); /*! \brief Determine if a given string is valid JSON white space \return Non-zero if the string is valid, zero otherwise. */ JSON_PARSER_DLL_API int JSON_parser_is_legal_white_space_string(const char* s); /*! \brief Gets the last error that occurred during the use of JSON_parser. \return A value from the JSON_error enum. */ JSON_PARSER_DLL_API int JSON_parser_get_last_error(JSON_parser jc); /*! \brief Re-sets the parser to prepare it for another parse run. \return True (non-zero) on success, 0 on error (e.g. !jc). */ JSON_PARSER_DLL_API int JSON_parser_reset(JSON_parser jc); #ifdef __cplusplus } #endif #endif /* JSON_PARSER_H */ /* end file parser/JSON_parser.h */ /* begin file parser/JSON_parser.c */ /* Copyright (c) 2005 JSON.org Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. The Software shall be used for Good, not Evil. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ /* Callbacks, comments, Unicode handling by Jean Gressmann (jean@0x42.de), 2007-2010. Changelog: 2010-11-25 Support for custom memory allocation (sgbeal@googlemail.com). 2010-05-07 Added error handling for memory allocation failure (sgbeal@googlemail.com). Added diagnosis errors for invalid JSON. 2010-03-25 Fixed buffer overrun in grow_parse_buffer & cleaned up code. 2009-10-19 Replaced long double in JSON_value_struct with double after reports of strtold being broken on some platforms (charles@transmissionbt.com). 2009-05-17 Incorporated benrudiak@googlemail.com fix for UTF16 decoding. 2009-05-14 Fixed float parsing bug related to a locale being set that didn't use '.' as decimal point character (charles@transmissionbt.com). 2008-10-14 Renamed states.IN to states.IT to avoid name clash which IN macro defined in windef.h (alexey.pelykh@gmail.com) 2008-07-19 Removed some duplicate code & debugging variable (charles@transmissionbt.com) 2008-05-28 Made JSON_value structure ansi C compliant. This bug was report by trisk@acm.jhu.edu 2008-05-20 Fixed bug reported by charles@transmissionbt.com where the switching from static to dynamic parse buffer did not copy the static parse buffer's content. */ #include <assert.h> #include <ctype.h> #include <float.h> #include <stddef.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <locale.h> #ifdef _MSC_VER # if _MSC_VER >= 1400 /* Visual Studio 2005 and up */ # pragma warning(disable:4996) /* unsecure sscanf */ # pragma warning(disable:4127) /* conditional expression is constant */ # endif #endif #define true 1 #define false 0 #define __ -1 /* the universal error code */ /* values chosen so that the object size is approx equal to one page (4K) */ #ifndef JSON_PARSER_STACK_SIZE # define JSON_PARSER_STACK_SIZE 128 #endif #ifndef JSON_PARSER_PARSE_BUFFER_SIZE # define JSON_PARSER_PARSE_BUFFER_SIZE 3500 #endif typedef void* (*JSON_debug_malloc_t)(size_t bytes, const char* reason); #ifdef JSON_PARSER_DEBUG_MALLOC # define JSON_parser_malloc(func, bytes, reason) ((JSON_debug_malloc_t)func)(bytes, reason) #else # define JSON_parser_malloc(func, bytes, reason) func(bytes) #endif typedef unsigned short UTF16; struct JSON_parser_struct { JSON_parser_callback callback; void* ctx; signed char state, before_comment_state, type, escaped, comment, allow_comments, handle_floats_manually, error; char decimal_point; UTF16 utf16_high_surrogate; int current_char; int depth; int top; int stack_capacity; signed char* stack; char* parse_buffer; size_t parse_buffer_capacity; size_t parse_buffer_count; signed char static_stack[JSON_PARSER_STACK_SIZE]; char static_parse_buffer[JSON_PARSER_PARSE_BUFFER_SIZE]; JSON_malloc_t malloc; JSON_free_t free; }; #define COUNTOF(x) (sizeof(x)/sizeof(x[0])) /* Characters are mapped into these character classes. This allows for a significant reduction in the size of the state transition table. */ enum classes { C_SPACE, /* space */ C_WHITE, /* other whitespace */ C_LCURB, /* { */ C_RCURB, /* } */ C_LSQRB, /* [ */ C_RSQRB, /* ] */ C_COLON, /* : */ C_COMMA, /* , */ C_QUOTE, /* " */ C_BACKS, /* \ */ C_SLASH, /* / */ C_PLUS, /* + */ C_MINUS, /* - */ C_POINT, /* . */ C_ZERO , /* 0 */ C_DIGIT, /* 123456789 */ C_LOW_A, /* a */ C_LOW_B, /* b */ C_LOW_C, /* c */ C_LOW_D, /* d */ C_LOW_E, /* e */ C_LOW_F, /* f */ C_LOW_L, /* l */ C_LOW_N, /* n */ C_LOW_R, /* r */ C_LOW_S, /* s */ C_LOW_T, /* t */ C_LOW_U, /* u */ C_ABCDF, /* ABCDF */ C_E, /* E */ C_ETC, /* everything else */ C_STAR, /* * */ NR_CLASSES }; static const signed char ascii_class[128] = { /* This array maps the 128 ASCII characters into character classes. The remaining Unicode characters should be mapped to C_ETC. Non-whitespace control characters are errors. */ __, __, __, __, __, __, __, __, __, C_WHITE, C_WHITE, __, __, C_WHITE, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, C_SPACE, C_ETC, C_QUOTE, C_ETC, C_ETC, C_ETC, C_ETC, C_ETC, C_ETC, C_ETC, C_STAR, C_PLUS, C_COMMA, C_MINUS, C_POINT, C_SLASH, C_ZERO, C_DIGIT, C_DIGIT, C_DIGIT, C_DIGIT, C_DIGIT, C_DIGIT, C_DIGIT, C_DIGIT, C_DIGIT, C_COLON, C_ETC, C_ETC, C_ETC, C_ETC, C_ETC, C_ETC, C_ABCDF, C_ABCDF, C_ABCDF, C_ABCDF, C_E, C_ABCDF, C_ETC, C_ETC, C_ETC, C_ETC, C_ETC, C_ETC, C_ETC, C_ETC, C_ETC, C_ETC, C_ETC, C_ETC, C_ETC, C_ETC, C_ETC, C_ETC, C_ETC, C_ETC, C_ETC, C_ETC, C_LSQRB, C_BACKS, C_RSQRB, C_ETC, C_ETC, C_ETC, C_LOW_A, C_LOW_B, C_LOW_C, C_LOW_D, C_LOW_E, C_LOW_F, C_ETC, C_ETC, C_ETC, C_ETC, C_ETC, C_LOW_L, C_ETC, C_LOW_N, C_ETC, C_ETC, C_ETC, C_LOW_R, C_LOW_S, C_LOW_T, C_LOW_U, C_ETC, C_ETC, C_ETC, C_ETC, C_ETC, C_LCURB, C_ETC, C_RCURB, C_ETC, C_ETC }; /* The state codes. */ enum states { GO, /* start */ OK, /* ok */ OB, /* object */ KE, /* key */ CO, /* colon */ VA, /* value */ AR, /* array */ ST, /* string */ ES, /* escape */ U1, /* u1 */ U2, /* u2 */ U3, /* u3 */ U4, /* u4 */ MI, /* minus */ ZE, /* zero */ IT, /* integer */ FR, /* fraction */ E1, /* e */ E2, /* ex */ E3, /* exp */ T1, /* tr */ T2, /* tru */ T3, /* true */ F1, /* fa */ F2, /* fal */ F3, /* fals */ F4, /* false */ N1, /* nu */ N2, /* nul */ N3, /* null */ C1, /* / */ C2, /* / * */ C3, /* * */ FX, /* *.* *eE* */ D1, /* second UTF-16 character decoding started by \ */ D2, /* second UTF-16 character proceeded by u */ NR_STATES }; enum actions { CB = -10, /* comment begin */ CE = -11, /* comment end */ FA = -12, /* false */ TR = -13, /* false */ NU = -14, /* null */ DE = -15, /* double detected by exponent e E */ DF = -16, /* double detected by fraction . */ SB = -17, /* string begin */ MX = -18, /* integer detected by minus */ ZX = -19, /* integer detected by zero */ IX = -20, /* integer detected by 1-9 */ EX = -21, /* next char is escaped */ UC = -22 /* Unicode character read */ }; static const signed char state_transition_table[NR_STATES][NR_CLASSES] = { /* The state transition table takes the current state and the current symbol, and returns either a new state or an action. An action is represented as a negative number. A JSON text is accepted if at the end of the text the state is OK and if the mode is MODE_DONE. white 1-9 ABCDF etc space | { } [ ] : , " \ / + - . 0 | a b c d e f l n r s t u | E | * */ /*start GO*/ {GO,GO,-6,__,-5,__,__,__,__,__,CB,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__}, /*ok OK*/ {OK,OK,__,-8,__,-7,__,-3,__,__,CB,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__}, /*object OB*/ {OB,OB,__,-9,__,__,__,__,SB,__,CB,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__}, /*key KE*/ {KE,KE,__,__,__,__,__,__,SB,__,CB,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__}, /*colon CO*/ {CO,CO,__,__,__,__,-2,__,__,__,CB,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__}, /*value VA*/ {VA,VA,-6,__,-5,__,__,__,SB,__,CB,__,MX,__,ZX,IX,__,__,__,__,__,FA,__,NU,__,__,TR,__,__,__,__,__}, /*array AR*/ {AR,AR,-6,__,-5,-7,__,__,SB,__,CB,__,MX,__,ZX,IX,__,__,__,__,__,FA,__,NU,__,__,TR,__,__,__,__,__}, /*string ST*/ {ST,__,ST,ST,ST,ST,ST,ST,-4,EX,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST}, /*escape ES*/ {__,__,__,__,__,__,__,__,ST,ST,ST,__,__,__,__,__,__,ST,__,__,__,ST,__,ST,ST,__,ST,U1,__,__,__,__}, /*u1 U1*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,U2,U2,U2,U2,U2,U2,U2,U2,__,__,__,__,__,__,U2,U2,__,__}, /*u2 U2*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,U3,U3,U3,U3,U3,U3,U3,U3,__,__,__,__,__,__,U3,U3,__,__}, /*u3 U3*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,U4,U4,U4,U4,U4,U4,U4,U4,__,__,__,__,__,__,U4,U4,__,__}, /*u4 U4*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,UC,UC,UC,UC,UC,UC,UC,UC,__,__,__,__,__,__,UC,UC,__,__}, /*minus MI*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,ZE,IT,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__}, /*zero ZE*/ {OK,OK,__,-8,__,-7,__,-3,__,__,CB,__,__,DF,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__}, /*int IT*/ {OK,OK,__,-8,__,-7,__,-3,__,__,CB,__,__,DF,IT,IT,__,__,__,__,DE,__,__,__,__,__,__,__,__,DE,__,__}, /*frac FR*/ {OK,OK,__,-8,__,-7,__,-3,__,__,CB,__,__,__,FR,FR,__,__,__,__,E1,__,__,__,__,__,__,__,__,E1,__,__}, /*e E1*/ {__,__,__,__,__,__,__,__,__,__,__,E2,E2,__,E3,E3,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__}, /*ex E2*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,E3,E3,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__}, /*exp E3*/ {OK,OK,__,-8,__,-7,__,-3,__,__,__,__,__,__,E3,E3,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__}, /*tr T1*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,T2,__,__,__,__,__,__,__}, /*tru T2*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,T3,__,__,__,__}, /*true T3*/ {__,__,__,__,__,__,__,__,__,__,CB,__,__,__,__,__,__,__,__,__,OK,__,__,__,__,__,__,__,__,__,__,__}, /*fa F1*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,F2,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__}, /*fal F2*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,F3,__,__,__,__,__,__,__,__,__}, /*fals F3*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,F4,__,__,__,__,__,__}, /*false F4*/ {__,__,__,__,__,__,__,__,__,__,CB,__,__,__,__,__,__,__,__,__,OK,__,__,__,__,__,__,__,__,__,__,__}, /*nu N1*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,N2,__,__,__,__}, /*nul N2*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,N3,__,__,__,__,__,__,__,__,__}, /*null N3*/ {__,__,__,__,__,__,__,__,__,__,CB,__,__,__,__,__,__,__,__,__,__,__,OK,__,__,__,__,__,__,__,__,__}, /*/ C1*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,C2}, /*/* C2*/ {C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C3}, /** C3*/ {C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,CE,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C3}, /*_. FX*/ {OK,OK,__,-8,__,-7,__,-3,__,__,__,__,__,__,FR,FR,__,__,__,__,E1,__,__,__,__,__,__,__,__,E1,__,__}, /*\ D1*/ {__,__,__,__,__,__,__,__,__,D2,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__}, /*\ D2*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,U1,__,__,__,__}, }; /* These modes can be pushed on the stack. */ enum modes { MODE_ARRAY = 1, MODE_DONE = 2, MODE_KEY = 3, MODE_OBJECT = 4 }; static void set_error(JSON_parser jc) { switch (jc->state) { case GO: switch (jc->current_char) { case '{': case '}': case '[': case ']': jc->error = JSON_E_UNBALANCED_COLLECTION; break; default: jc->error = JSON_E_INVALID_CHAR; break; } break; case OB: jc->error = JSON_E_EXPECTED_KEY; break; case AR: jc->error = JSON_E_UNBALANCED_COLLECTION; break; case CO: jc->error = JSON_E_EXPECTED_COLON; break; case KE: jc->error = JSON_E_EXPECTED_KEY; break; /* \uXXXX\uYYYY */ case U1: case U2: case U3: case U4: case D1: case D2: jc->error = JSON_E_INVALID_UNICODE_SEQUENCE; break; /* true, false, null */ case T1: case T2: case T3: case F1: case F2: case F3: case F4: case N1: case N2: case N3: jc->error = JSON_E_INVALID_KEYWORD; break; /* minus, integer, fraction, exponent */ case MI: case ZE: case IT: case FR: case E1: case E2: case E3: jc->error = JSON_E_INVALID_NUMBER; break; default: jc->error = JSON_E_INVALID_CHAR; break; } } static int push(JSON_parser jc, int mode) { /* Push a mode onto the stack. Return false if there is overflow. */ assert(jc->top <= jc->stack_capacity); if (jc->depth < 0) { if (jc->top == jc->stack_capacity) { const size_t bytes_to_copy = jc->stack_capacity * sizeof(jc->stack[0]); const size_t new_capacity = jc->stack_capacity * 2; const size_t bytes_to_allocate = new_capacity * sizeof(jc->stack[0]); void* mem = JSON_parser_malloc(jc->malloc, bytes_to_allocate, "stack"); if (!mem) { jc->error = JSON_E_OUT_OF_MEMORY; return false; } jc->stack_capacity = (int)new_capacity; memcpy(mem, jc->stack, bytes_to_copy); if (jc->stack != &jc->static_stack[0]) { jc->free(jc->stack); } jc->stack = (signed char*)mem; } } else { if (jc->top == jc->depth) { jc->error = JSON_E_NESTING_DEPTH_REACHED; return false; } } jc->stack[++jc->top] = (signed char)mode; return true; } static int pop(JSON_parser jc, int mode) { /* Pop the stack, assuring that the current mode matches the expectation. Return false if there is underflow or if the modes mismatch. */ if (jc->top < 0 || jc->stack[jc->top] != mode) { return false; } jc->top -= 1; return true; } #define parse_buffer_clear(jc) \ do {\ jc->parse_buffer_count = 0;\ jc->parse_buffer[0] = 0;\ } while (0) #define parse_buffer_pop_back_char(jc)\ do {\ assert(jc->parse_buffer_count >= 1);\ --jc->parse_buffer_count;\ jc->parse_buffer[jc->parse_buffer_count] = 0;\ } while (0) void delete_JSON_parser(JSON_parser jc) { if (jc) { if (jc->stack != &jc->static_stack[0]) { jc->free((void*)jc->stack); } if (jc->parse_buffer != &jc->static_parse_buffer[0]) { jc->free((void*)jc->parse_buffer); } jc->free((void*)jc); } } int JSON_parser_reset(JSON_parser jc) { if (NULL == jc) { return false; } jc->state = GO; jc->top = -1; /* parser has been used previously? */ if (NULL == jc->parse_buffer) { /* Do we want non-bound stack? */ if (jc->depth > 0) { jc->stack_capacity = jc->depth; if (jc->depth <= (int)COUNTOF(jc->static_stack)) { jc->stack = &jc->static_stack[0]; } else { const size_t bytes_to_alloc = jc->stack_capacity * sizeof(jc->stack[0]); jc->stack = (signed char*)JSON_parser_malloc(jc->malloc, bytes_to_alloc, "stack"); if (jc->stack == NULL) { return false; } } } else { jc->stack_capacity = (int)COUNTOF(jc->static_stack); jc->depth = -1; jc->stack = &jc->static_stack[0]; } /* set up the parse buffer */ jc->parse_buffer = &jc->static_parse_buffer[0]; jc->parse_buffer_capacity = COUNTOF(jc->static_parse_buffer); } /* set parser to start */ push(jc, MODE_DONE); parse_buffer_clear(jc); return true; } JSON_parser new_JSON_parser(JSON_config const * config) { /* new_JSON_parser starts the checking process by constructing a JSON_parser object. It takes a depth parameter that restricts the level of maximum nesting. To continue the process, call JSON_parser_char for each character in the JSON text, and then call JSON_parser_done to obtain the final result. These functions are fully reentrant. */ int use_std_malloc = false; JSON_config default_config; JSON_parser jc; JSON_malloc_t alloc; /* set to default configuration if none was provided */ if (NULL == config) { /* initialize configuration */ init_JSON_config(&default_config); config = &default_config; } /* use std malloc if either the allocator or deallocator function isn't set */ use_std_malloc = NULL == config->malloc || NULL == config->free; alloc = use_std_malloc ? malloc : config->malloc; jc = JSON_parser_malloc(alloc, sizeof(*jc), "parser"); if (NULL == jc) { return NULL; } /* configure the parser */ memset(jc, 0, sizeof(*jc)); jc->malloc = alloc; jc->free = use_std_malloc ? free : config->free; jc->callback = config->callback; jc->ctx = config->callback_ctx; jc->allow_comments = (signed char)(config->allow_comments != 0); jc->handle_floats_manually = (signed char)(config->handle_floats_manually != 0); jc->decimal_point = *localeconv()->decimal_point; /* We need to be able to push at least one object */ jc->depth = config->depth == 0 ? 1 : config->depth; /* reset the parser */ if (!JSON_parser_reset(jc)) { jc->free(jc); return NULL; } return jc; } static int parse_buffer_grow(JSON_parser jc) { const size_t bytes_to_copy = jc->parse_buffer_count * sizeof(jc->parse_buffer[0]); const size_t new_capacity = jc->parse_buffer_capacity * 2; const size_t bytes_to_allocate = new_capacity * sizeof(jc->parse_buffer[0]); void* mem = JSON_parser_malloc(jc->malloc, bytes_to_allocate, "parse buffer"); if (mem == NULL) { jc->error = JSON_E_OUT_OF_MEMORY; return false; } assert(new_capacity > 0); memcpy(mem, jc->parse_buffer, bytes_to_copy); if (jc->parse_buffer != &jc->static_parse_buffer[0]) { jc->free(jc->parse_buffer); } jc->parse_buffer = (char*)mem; jc->parse_buffer_capacity = new_capacity; return true; } static int parse_buffer_reserve_for(JSON_parser jc, unsigned chars) { while (jc->parse_buffer_count + chars + 1 > jc->parse_buffer_capacity) { if (!parse_buffer_grow(jc)) { assert(jc->error == JSON_E_OUT_OF_MEMORY); return false; } } return true; } #define parse_buffer_has_space_for(jc, count) \ (jc->parse_buffer_count + (count) + 1 <= jc->parse_buffer_capacity) #define parse_buffer_push_back_char(jc, c)\ do {\ assert(parse_buffer_has_space_for(jc, 1)); \ jc->parse_buffer[jc->parse_buffer_count++] = c;\ jc->parse_buffer[jc->parse_buffer_count] = 0;\ } while (0) #define assert_is_non_container_type(jc) \ assert( \ jc->type == JSON_T_NULL || \ jc->type == JSON_T_FALSE || \ jc->type == JSON_T_TRUE || \ jc->type == JSON_T_FLOAT || \ jc->type == JSON_T_INTEGER || \ jc->type == JSON_T_STRING) static int parse_parse_buffer(JSON_parser jc) { if (jc->callback) { JSON_value value, *arg = NULL; if (jc->type != JSON_T_NONE) { assert_is_non_container_type(jc); switch(jc->type) { case JSON_T_FLOAT: arg = &value; if (jc->handle_floats_manually) { value.vu.str.value = jc->parse_buffer; value.vu.str.length = jc->parse_buffer_count; } else { /* not checking with end pointer b/c there may be trailing ws */ value.vu.float_value = strtod(jc->parse_buffer, NULL); } break; case JSON_T_INTEGER: arg = &value; sscanf(jc->parse_buffer, JSON_PARSER_INTEGER_SSCANF_TOKEN, &value.vu.integer_value); break; case JSON_T_STRING: arg = &value; value.vu.str.value = jc->parse_buffer; value.vu.str.length = jc->parse_buffer_count; break; } if (!(*jc->callback)(jc->ctx, jc->type, arg)) { return false; } } } parse_buffer_clear(jc); return true; } #define IS_HIGH_SURROGATE(uc) (((uc) & 0xFC00) == 0xD800) #define IS_LOW_SURROGATE(uc) (((uc) & 0xFC00) == 0xDC00) #define DECODE_SURROGATE_PAIR(hi,lo) ((((hi) & 0x3FF) << 10) + ((lo) & 0x3FF) + 0x10000) static const unsigned char utf8_lead_bits[4] = { 0x00, 0xC0, 0xE0, 0xF0 }; static int decode_unicode_char(JSON_parser jc) { int i; unsigned uc = 0; char* p; int trail_bytes; assert(jc->parse_buffer_count >= 6); p = &jc->parse_buffer[jc->parse_buffer_count - 4]; for (i = 12; i >= 0; i -= 4, ++p) { unsigned x = *p; if (x >= 'a') { x -= ('a' - 10); } else if (x >= 'A') { x -= ('A' - 10); } else { x &= ~0x30u; } assert(x < 16); uc |= x << i; } /* clear UTF-16 char from buffer */ jc->parse_buffer_count -= 6; jc->parse_buffer[jc->parse_buffer_count] = 0; /* attempt decoding ... */ if (jc->utf16_high_surrogate) { if (IS_LOW_SURROGATE(uc)) { uc = DECODE_SURROGATE_PAIR(jc->utf16_high_surrogate, uc); trail_bytes = 3; jc->utf16_high_surrogate = 0; } else { /* high surrogate without a following low surrogate */ return false; } } else { if (uc < 0x80) { trail_bytes = 0; } else if (uc < 0x800) { trail_bytes = 1; } else if (IS_HIGH_SURROGATE(uc)) { /* save the high surrogate and wait for the low surrogate */ jc->utf16_high_surrogate = (UTF16)uc; return true; } else if (IS_LOW_SURROGATE(uc)) { /* low surrogate without a preceding high surrogate */ return false; } else { trail_bytes = 2; } } jc->parse_buffer[jc->parse_buffer_count++] = (char) ((uc >> (trail_bytes * 6)) | utf8_lead_bits[trail_bytes]); for (i = trail_bytes * 6 - 6; i >= 0; i -= 6) { jc->parse_buffer[jc->parse_buffer_count++] = (char) (((uc >> i) & 0x3F) | 0x80); } jc->parse_buffer[jc->parse_buffer_count] = 0; return true; } static int add_escaped_char_to_parse_buffer(JSON_parser jc, int next_char) { assert(parse_buffer_has_space_for(jc, 1)); jc->escaped = 0; /* remove the backslash */ parse_buffer_pop_back_char(jc); switch(next_char) { case 'b': parse_buffer_push_back_char(jc, '\b'); break; case 'f': parse_buffer_push_back_char(jc, '\f'); break; case 'n': parse_buffer_push_back_char(jc, '\n'); break; case 'r': parse_buffer_push_back_char(jc, '\r'); break; case 't': parse_buffer_push_back_char(jc, '\t'); break; case '"': parse_buffer_push_back_char(jc, '"'); break; case '\\': parse_buffer_push_back_char(jc, '\\'); break; case '/': parse_buffer_push_back_char(jc, '/'); break; case 'u': parse_buffer_push_back_char(jc, '\\'); parse_buffer_push_back_char(jc, 'u'); break; default: return false; } return true; } static int add_char_to_parse_buffer(JSON_parser jc, int next_char, int next_class) { if (!parse_buffer_reserve_for(jc, 1)) { assert(JSON_E_OUT_OF_MEMORY == jc->error); return false; } if (jc->escaped) { if (!add_escaped_char_to_parse_buffer(jc, next_char)) { jc->error = JSON_E_INVALID_ESCAPE_SEQUENCE; return false; } } else if (!jc->comment) { if ((jc->type != JSON_T_NONE) | !((next_class == C_SPACE) | (next_class == C_WHITE)) /* non-white-space */) { parse_buffer_push_back_char(jc, (char)next_char); } } return true; } #define assert_type_isnt_string_null_or_bool(jc) \ assert(jc->type != JSON_T_FALSE); \ assert(jc->type != JSON_T_TRUE); \ assert(jc->type != JSON_T_NULL); \ assert(jc->type != JSON_T_STRING) int JSON_parser_char(JSON_parser jc, int next_char) { /* After calling new_JSON_parser, call this function for each character (or partial character) in your JSON text. It can accept UTF-8, UTF-16, or UTF-32. It returns true if things are looking ok so far. If it rejects the text, it returns false. */ int next_class, next_state; /* Store the current char for error handling */ jc->current_char = next_char; /* Determine the character's class. */ if (next_char < 0) { jc->error = JSON_E_INVALID_CHAR; return false; } if (next_char >= 128) { next_class = C_ETC; } else { next_class = ascii_class[next_char]; if (next_class <= __) { set_error(jc); return false; } } if (!add_char_to_parse_buffer(jc, next_char, next_class)) { return false; } /* Get the next state from the state transition table. */ next_state = state_transition_table[jc->state][next_class]; if (next_state >= 0) { /* Change the state. */ jc->state = (signed char)next_state; } else { /* Or perform one of the actions. */ switch (next_state) { /* Unicode character */ case UC: if(!decode_unicode_char(jc)) { jc->error = JSON_E_INVALID_UNICODE_SEQUENCE; return false; } /* check if we need to read a second UTF-16 char */ if (jc->utf16_high_surrogate) { jc->state = D1; } else { jc->state = ST; } break; /* escaped char */ case EX: jc->escaped = 1; jc->state = ES; break; /* integer detected by minus */ case MX: jc->type = JSON_T_INTEGER; jc->state = MI; break; /* integer detected by zero */ case ZX: jc->type = JSON_T_INTEGER; jc->state = ZE; break; /* integer detected by 1-9 */ case IX: jc->type = JSON_T_INTEGER; jc->state = IT; break; /* floating point number detected by exponent*/ case DE: assert_type_isnt_string_null_or_bool(jc); jc->type = JSON_T_FLOAT; jc->state = E1; break; /* floating point number detected by fraction */ case DF: assert_type_isnt_string_null_or_bool(jc); if (!jc->handle_floats_manually) { /* Some versions of strtod (which underlies sscanf) don't support converting C-locale formated floating point values. */ assert(jc->parse_buffer[jc->parse_buffer_count-1] == '.'); jc->parse_buffer[jc->parse_buffer_count-1] = jc->decimal_point; } jc->type = JSON_T_FLOAT; jc->state = FX; break; /* string begin " */ case SB: parse_buffer_clear(jc); assert(jc->type == JSON_T_NONE); jc->type = JSON_T_STRING; jc->state = ST; break; /* n */ case NU: assert(jc->type == JSON_T_NONE); jc->type = JSON_T_NULL; jc->state = N1; break; /* f */ case FA: assert(jc->type == JSON_T_NONE); jc->type = JSON_T_FALSE; jc->state = F1; break; /* t */ case TR: assert(jc->type == JSON_T_NONE); jc->type = JSON_T_TRUE; jc->state = T1; break; /* closing comment */ case CE: jc->comment = 0; assert(jc->parse_buffer_count == 0); assert(jc->type == JSON_T_NONE); jc->state = jc->before_comment_state; break; /* opening comment */ case CB: if (!jc->allow_comments) { return false; } parse_buffer_pop_back_char(jc); if (!parse_parse_buffer(jc)) { return false; } assert(jc->parse_buffer_count == 0); assert(jc->type != JSON_T_STRING); switch (jc->stack[jc->top]) { case MODE_ARRAY: case MODE_OBJECT: switch(jc->state) { case VA: case AR: jc->before_comment_state = jc->state; break; default: jc->before_comment_state = OK; break; } break; default: jc->before_comment_state = jc->state; break; } jc->type = JSON_T_NONE; jc->state = C1; jc->comment = 1; break; /* empty } */ case -9: parse_buffer_clear(jc); if (jc->callback && !(*jc->callback)(jc->ctx, JSON_T_OBJECT_END, NULL)) { return false; } if (!pop(jc, MODE_KEY)) { return false; } jc->state = OK; break; /* } */ case -8: parse_buffer_pop_back_char(jc); if (!parse_parse_buffer(jc)) { return false; } if (jc->callback && !(*jc->callback)(jc->ctx, JSON_T_OBJECT_END, NULL)) { return false; } if (!pop(jc, MODE_OBJECT)) { jc->error = JSON_E_UNBALANCED_COLLECTION; return false; } jc->type = JSON_T_NONE; jc->state = OK; break; /* ] */ case -7: parse_buffer_pop_back_char(jc); if (!parse_parse_buffer(jc)) { return false; } if (jc->callback && !(*jc->callback)(jc->ctx, JSON_T_ARRAY_END, NULL)) { return false; } if (!pop(jc, MODE_ARRAY)) { jc->error = JSON_E_UNBALANCED_COLLECTION; return false; } jc->type = JSON_T_NONE; jc->state = OK; break; /* { */ case -6: parse_buffer_pop_back_char(jc); if (jc->callback && !(*jc->callback)(jc->ctx, JSON_T_OBJECT_BEGIN, NULL)) { return false; } if (!push(jc, MODE_KEY)) { return false; } assert(jc->type == JSON_T_NONE); jc->state = OB; break; /* [ */ case -5: parse_buffer_pop_back_char(jc); if (jc->callback && !(*jc->callback)(jc->ctx, JSON_T_ARRAY_BEGIN, NULL)) { return false; } if (!push(jc, MODE_ARRAY)) { return false; } assert(jc->type == JSON_T_NONE); jc->state = AR; break; /* string end " */ case -4: parse_buffer_pop_back_char(jc); switch (jc->stack[jc->top]) { case MODE_KEY: assert(jc->type == JSON_T_STRING); jc->type = JSON_T_NONE; jc->state = CO; if (jc->callback) { JSON_value value; value.vu.str.value = jc->parse_buffer; value.vu.str.length = jc->parse_buffer_count; if (!(*jc->callback)(jc->ctx, JSON_T_KEY, &value)) { return false; } } parse_buffer_clear(jc); break; case MODE_ARRAY: case MODE_OBJECT: assert(jc->type == JSON_T_STRING); if (!parse_parse_buffer(jc)) { return false; } jc->type = JSON_T_NONE; jc->state = OK; break; default: return false; } break; /* , */ case -3: parse_buffer_pop_back_char(jc); if (!parse_parse_buffer(jc)) { return false; } switch (jc->stack[jc->top]) { case MODE_OBJECT: /* A comma causes a flip from object mode to key mode. */ if (!pop(jc, MODE_OBJECT) || !push(jc, MODE_KEY)) { return false; } assert(jc->type != JSON_T_STRING); jc->type = JSON_T_NONE; jc->state = KE; break; case MODE_ARRAY: assert(jc->type != JSON_T_STRING); jc->type = JSON_T_NONE; jc->state = VA; break; default: return false; } break; /* : */ case -2: /* A colon causes a flip from key mode to object mode. */ parse_buffer_pop_back_char(jc); if (!pop(jc, MODE_KEY) || !push(jc, MODE_OBJECT)) { return false; } assert(jc->type == JSON_T_NONE); jc->state = VA; break; /* Bad action. */ default: set_error(jc); return false; } } return true; } int JSON_parser_done(JSON_parser jc) { if ((jc->state == OK || jc->state == GO) && pop(jc, MODE_DONE)) { return true; } jc->error = JSON_E_UNBALANCED_COLLECTION; return false; } int JSON_parser_is_legal_white_space_string(const char* s) { int c, char_class; if (s == NULL) { return false; } for (; *s; ++s) { c = *s; if (c < 0 || c >= 128) { return false; } char_class = ascii_class[c]; if (char_class != C_SPACE && char_class != C_WHITE) { return false; } } return true; } int JSON_parser_get_last_error(JSON_parser jc) { return jc->error; } void init_JSON_config(JSON_config* config) { if (config) { memset(config, 0, sizeof(*config)); config->depth = JSON_PARSER_STACK_SIZE - 1; config->malloc = malloc; config->free = free; } } /* end file parser/JSON_parser.c */ /* begin file ./cson.c */ #include <assert.h> #include <stdlib.h> /* malloc()/free() */ #include <string.h> #ifdef _MSC_VER # if _MSC_VER >= 1400 /* Visual Studio 2005 and up */ # pragma warning( push ) # pragma warning(disable:4996) /* unsecure sscanf (but snscanf() isn't in c89) */ # pragma warning(disable:4244) /* complaining about data loss due to integer precision in the sqlite3 utf decoding routines */ # endif #endif #if 1 #include <stdio.h> #define MARKER if(1) printf("MARKER: %s:%d:%s():\t",__FILE__,__LINE__,__func__); if(1) printf #else static void noop_printf(char const * fmt, ...) {} #define MARKER if(0) printf #endif #if defined(__cplusplus) extern "C" { #endif /** Type IDs corresponding to JavaScript/JSON types. */ enum cson_type_id { /** The special "null" value constant. Its value must be 0 for internal reasons. */ CSON_TYPE_UNDEF = 0, /** The special "null" value constant. */ CSON_TYPE_NULL = 1, /** The bool value type. */ CSON_TYPE_BOOL = 2, /** The integer value type, represented in this library by cson_int_t. */ CSON_TYPE_INTEGER = 3, /** The double value type, represented in this library by cson_double_t. */ CSON_TYPE_DOUBLE = 4, /** The immutable string type. This library stores strings as immutable UTF8. */ CSON_TYPE_STRING = 5, /** The "Array" type. */ CSON_TYPE_ARRAY = 6, /** The "Object" type. */ CSON_TYPE_OBJECT = 7 }; typedef enum cson_type_id cson_type_id; /** This type holds the "vtbl" for type-specific operations when working with cson_value objects. All cson_values of a given logical type share a pointer to a single library-internal instance of this class. */ struct cson_value_api { /** The logical JavaScript/JSON type associated with this object. */ const cson_type_id typeID; /** Must free any memory associated with self, but not free self. If self is NULL then this function must do nothing. */ void (*cleanup)( cson_value * self ); /** POSSIBLE TODOs: // Deep copy. int (*clone)( cson_value const * self, cson_value ** tgt ); // Using JS semantics for true/value char (*bool_value)( cson_value const * self ); // memcmp() return value semantics int (*compare)( cson_value const * self, cson_value const * other ); */ }; typedef struct cson_value_api cson_value_api; /** Empty-initialized cson_value_api object. */ #define cson_value_api_empty_m { \ CSON_TYPE_UNDEF/*typeID*/, \ NULL/*cleanup*/\ } /** Empty-initialized cson_value_api object. */ static const cson_value_api cson_value_api_empty = cson_value_api_empty_m; typedef unsigned int cson_counter_t; struct cson_value { /** The "vtbl" of type-specific operations. All instances of a given logical value type share a single api instance. Results are undefined if this value is NULL. */ cson_value_api const * api; /** The raw value. Its interpretation depends on the value of the api member. Some value types require dynamically-allocated memory, so one must always call cson_value_free() to destroy a value when it is no longer needed. For stack-allocated values (which client could SHOULD NOT USE unless they are intimately familiar with the memory management rules and don't mind an occasional leak or crash), use cson_value_clean() instead of cson_value_free(). */ void * value; /** We use this to allow us to store cson_value instances in multiple containers or multiple times within a single container (provided no cycles are introduced). Notes about the rc implementation: - The refcount is for the cson_value instance itself, not its value pointer. - Instances start out with a refcount of 0 (not 1). Adding them to a container will increase the refcount. Cleaning up the container will decrement the count. - cson_value_free() decrements the refcount (if it is not already 0) and cleans/frees the value only when the refcount is 0. - Some places in the internals add an "extra" reference to objects to avoid a premature deletion. Don't try this at home. */ cson_counter_t refcount; }; /** Empty-initialized cson_value object. */ #define cson_value_empty_m { &cson_value_api_empty/*api*/, NULL/*value*/, 0/*refcount*/ } /** Empty-initialized cson_value object. */ extern const cson_value cson_value_empty; const cson_value cson_value_empty = cson_value_empty_m; const cson_parse_opt cson_parse_opt_empty = cson_parse_opt_empty_m; const cson_output_opt cson_output_opt_empty = cson_output_opt_empty_m; const cson_object_iterator cson_object_iterator_empty = cson_object_iterator_empty_m; const cson_buffer cson_buffer_empty = cson_buffer_empty_m; const cson_parse_info cson_parse_info_empty = cson_parse_info_empty_m; static void cson_value_destroy_zero_it( cson_value * self ); static void cson_value_destroy_object( cson_value * self ); /** If self is-a array then this function destroys its contents, else this function does nothing. */ static void cson_value_destroy_array( cson_value * self ); static const cson_value_api cson_value_api_null = { CSON_TYPE_NULL, cson_value_destroy_zero_it }; static const cson_value_api cson_value_api_undef = { CSON_TYPE_UNDEF, cson_value_destroy_zero_it }; static const cson_value_api cson_value_api_bool = { CSON_TYPE_BOOL, cson_value_destroy_zero_it }; static const cson_value_api cson_value_api_integer = { CSON_TYPE_INTEGER, cson_value_destroy_zero_it }; static const cson_value_api cson_value_api_double = { CSON_TYPE_DOUBLE, cson_value_destroy_zero_it }; static const cson_value_api cson_value_api_string = { CSON_TYPE_STRING, cson_value_destroy_zero_it }; static const cson_value_api cson_value_api_array = { CSON_TYPE_ARRAY, cson_value_destroy_array }; static const cson_value_api cson_value_api_object = { CSON_TYPE_OBJECT, cson_value_destroy_object }; static const cson_value cson_value_undef = { &cson_value_api_undef, NULL, 0 }; static const cson_value cson_value_null_empty = { &cson_value_api_null, NULL, 0 }; static const cson_value cson_value_bool_empty = { &cson_value_api_bool, NULL, 0 }; static const cson_value cson_value_integer_empty = { &cson_value_api_integer, NULL, 0 }; static const cson_value cson_value_double_empty = { &cson_value_api_double, NULL, 0 }; static const cson_value cson_value_string_empty = { &cson_value_api_string, NULL, 0 }; static const cson_value cson_value_array_empty = { &cson_value_api_array, NULL, 0 }; static const cson_value cson_value_object_empty = { &cson_value_api_object, NULL, 0 }; struct cson_string { unsigned int length; }; #define cson_string_empty_m {0/*length*/} static const cson_string cson_string_empty = cson_string_empty_m; #define CSON_CAST(T,V) ((T*)((V)->value)) #define CSON_VCAST(V) ((cson_value *)(((unsigned char *)(V))-sizeof(cson_value))) #define CSON_INT(V) ((cson_int_t*)(V)->value) #define CSON_DBL(V) CSON_CAST(cson_double_t,(V)) #define CSON_STR(V) CSON_CAST(cson_string,(V)) #define CSON_OBJ(V) CSON_CAST(cson_object,(V)) #define CSON_ARRAY(V) CSON_CAST(cson_array,(V)) /** Holds special shared "constant" (though they are non-const) values. */ static struct CSON_EMPTY_HOLDER_ { char trueValue; cson_string stringValue; } CSON_EMPTY_HOLDER = { 1/*trueValue*/, cson_string_empty_m }; /** Indexes into the CSON_SPECIAL_VALUES array. If this enum changes in any way, makes damned sure that CSON_SPECIAL_VALUES is updated to match!!! */ enum CSON_INTERNAL_VALUES { CSON_VAL_UNDEF = 0, CSON_VAL_NULL = 1, CSON_VAL_TRUE = 2, CSON_VAL_FALSE = 3, CSON_VAL_INT_0 = 4, CSON_VAL_DBL_0 = 5, CSON_VAL_STR_EMPTY = 6, CSON_INTERNAL_VALUES_LENGTH }; /** Some "special" shared cson_value instances. These values MUST be initialized in the order specified by the CSON_INTERNAL_VALUES enum. Note that they are not const because they are used as shared-allocation objects in non-const contexts. However, the public API provides no way to modifying them, and clients who modify values directly are subject to The Wrath of Undefined Behaviour. */ static cson_value CSON_SPECIAL_VALUES[] = { { &cson_value_api_undef, NULL, 0 }, /* UNDEF */ { &cson_value_api_null, NULL, 0 }, /* NULL */ { &cson_value_api_bool, &CSON_EMPTY_HOLDER.trueValue, 0 }, /* TRUE */ { &cson_value_api_bool, NULL, 0 }, /* FALSE */ { &cson_value_api_integer, NULL, 0 }, /* INT_0 */ { &cson_value_api_double, NULL, 0 }, /* DBL_0 */ { &cson_value_api_string, &CSON_EMPTY_HOLDER.stringValue, 0 }, /* STR_EMPTY */ { 0, NULL, 0 } }; /** Returns non-0 (true) if m is one of our special "built-in" values, e.g. from CSON_SPECIAL_VALUES and some "empty" values. If this returns true, m MUST NOT be free()d! */ static char cson_value_is_builtin( void const * m ) { if((m >= (void const *)&CSON_EMPTY_HOLDER) && ( m < (void const *)(&CSON_EMPTY_HOLDER+1))) return 1; else return ((m > (void const *)&CSON_SPECIAL_VALUES[0]) && ( m < (void const *)&CSON_SPECIAL_VALUES[CSON_INTERNAL_VALUES_LENGTH]) ) ? 1 : 0; } char const * cson_rc_string(int rc) { if(0 == rc) return "OK"; #define CHECK(N) else if(cson_rc.N == rc ) return #N CHECK(OK); CHECK(ArgError); CHECK(RangeError); CHECK(TypeError); CHECK(IOError); CHECK(AllocError); CHECK(NYIError); CHECK(InternalError); CHECK(UnsupportedError); CHECK(NotFoundError); CHECK(UnknownError); CHECK(Parse_INVALID_CHAR); CHECK(Parse_INVALID_KEYWORD); CHECK(Parse_INVALID_ESCAPE_SEQUENCE); CHECK(Parse_INVALID_UNICODE_SEQUENCE); CHECK(Parse_INVALID_NUMBER); CHECK(Parse_NESTING_DEPTH_REACHED); CHECK(Parse_UNBALANCED_COLLECTION); CHECK(Parse_EXPECTED_KEY); CHECK(Parse_EXPECTED_COLON); else return "UnknownError"; #undef CHECK } /** If CSON_LOG_ALLOC is true then the cson_malloc/realloc/free() routines will log a message to stderr. */ #define CSON_LOG_ALLOC 0 /** CSON_FOSSIL_MODE is only for use in the Fossil source tree, so that we can plug in to its allocators. We can't do this by, e.g., defining macros for the malloc/free funcs because fossil's lack of header files means we would have to #include "main.c" here to get the declarations. */ #if defined(CSON_FOSSIL_MODE) void *fossil_malloc(size_t n); void fossil_free(void *p); void *fossil_realloc(void *p, size_t n); # define CSON_MALLOC_IMPL fossil_malloc # define CSON_FREE_IMPL fossil_free # define CSON_REALLOC_IMPL fossil_realloc #endif #if !defined CSON_MALLOC_IMPL # define CSON_MALLOC_IMPL malloc #endif #if !defined CSON_FREE_IMPL # define CSON_FREE_IMPL free #endif #if !defined CSON_REALLOC_IMPL # define CSON_REALLOC_IMPL realloc #endif /** A test/debug macro for simulating an OOM after the given number of bytes have been allocated. */ #define CSON_SIMULATE_OOM 0 #if CSON_SIMULATE_OOM static unsigned int cson_totalAlloced = 0; #endif /** Simple proxy for malloc(). descr is a description of the allocation. */ static void * cson_malloc( size_t n, char const * descr ) { #if CSON_LOG_ALLOC fprintf(stderr, "Allocating %u bytes [%s].\n", (unsigned int)n, descr); #endif #if CSON_SIMULATE_OOM cson_totalAlloced += n; if( cson_totalAlloced > CSON_SIMULATE_OOM ) { return NULL; } #endif return CSON_MALLOC_IMPL(n); } /** Simple proxy for free(). descr is a description of the memory being freed. */ static void cson_free( void * p, char const * descr ) { #if CSON_LOG_ALLOC fprintf(stderr, "Freeing @%p [%s].\n", p, descr); #endif if( !cson_value_is_builtin(p) ) { CSON_FREE_IMPL( p ); } } /** Simple proxy for realloc(). descr is a description of the (re)allocation. */ static void * cson_realloc( void * hint, size_t n, char const * descr ) { #if CSON_LOG_ALLOC fprintf(stderr, "%sllocating %u bytes [%s].\n", hint ? "Rea" : "A", (unsigned int)n, descr); #endif #if CSON_SIMULATE_OOM cson_totalAlloced += n; if( cson_totalAlloced > CSON_SIMULATE_OOM ) { return NULL; } #endif if( 0==n ) { cson_free(hint, descr); return NULL; } else { return CSON_REALLOC_IMPL( hint, n ); } } #undef CSON_LOG_ALLOC #undef CSON_SIMULATE_OOM /** CLIENTS CODE SHOULD NEVER USE THIS because it opens up doors to memory leaks if it is not used in very controlled circumstances. Users must be very aware of how the underlying memory management works. Frees any resources owned by val, but does not free val itself (which may be stack-allocated). If !val or val->api or val->api->cleanup are NULL then this is a no-op. If v is a container type (object or array) its children are also cleaned up (BUT NOT FREED), recursively. After calling this, val will have the special "undefined" type. */ static void cson_value_clean( cson_value * val ); /** Increments cv's reference count by 1. As a special case, values for which cson_value_is_builtin() returns true are not modified. assert()s if (NULL==cv). */ static void cson_refcount_incr( cson_value * cv ) { assert( NULL != cv ); if( cson_value_is_builtin( cv ) ) { /* do nothing: we do not want to modify the shared instances. */ return; } else { ++cv->refcount; } } #if 0 int cson_value_refcount_set( cson_value * cv, unsigned short rc ) { if( NULL == cv ) return cson_rc.ArgError; else { cv->refcount = rc; return 0; } } #endif int cson_value_add_reference( cson_value * cv ) { if( NULL == cv ) return cson_rc.ArgError; else if( (cv->refcount+1) < cv->refcount ) { return cson_rc.RangeError; } else { cson_refcount_incr( cv ); return 0; } } /** If cv is NULL or cson_value_is_builtin(cv) returns true then this function does nothing and returns 0, otherwise... If cv->refcount is 0 or 1 then cson_value_clean(cv) is called, cv is freed, and 0 is returned. If cv->refcount is any other value then it is decremented and the new value is returned. */ static cson_counter_t cson_refcount_decr( cson_value * cv ) { if( (NULL == cv) || cson_value_is_builtin(cv) ) return 0; else if( (0 == cv->refcount) || (0 == --cv->refcount) ) { cson_value_clean(cv); cson_free(cv,"cson_value::refcount=0"); return 0; } else return cv->refcount; } unsigned int cson_string_length_bytes( cson_string const * str ) { return str ? str->length : 0; } /** Fetches v's string value as a non-const string. cson_strings are supposed to be immutable, but this form provides access to the immutable bits, which are v->length bytes long. A length-0 string is returned as NULL from here, as opposed to "". (This is a side-effect of the string allocation mechanism.) Returns NULL if !v. */ static char * cson_string_str(cson_string *v) { /* See http://groups.google.com/group/comp.lang.c.moderated/browse_thread/thread/2e0c0df5e8a0cd6a */ #if 1 if( !v || (&CSON_EMPTY_HOLDER.stringValue == v) ) return NULL; else return (char *)((unsigned char *)( v+1 )); #else static char empty[2] = {0,0}; return ( NULL == v ) ? NULL : (v->length ? (char *) (((unsigned char *)v) + sizeof(cson_string)) : empty) ; #endif } /** Fetches v's string value as a const string. */ char const * cson_string_cstr(cson_string const *v) { /* See http://groups.google.com/group/comp.lang.c.moderated/browse_thread/thread/2e0c0df5e8a0cd6a */ #if 1 if( ! v ) return NULL; else if( v == &CSON_EMPTY_HOLDER.stringValue ) return ""; else return (char *)((unsigned char *)(v+1)); #else return (NULL == v) ? NULL : (v->length ? (char const *) ((unsigned char const *)(v+1)) : ""); #endif } #if 0 /** Just like strndup(3), in that neither are C89/C99-standard and both are documented in detail in strndup(3). */ static char * cson_strdup( char const * src, size_t n ) { char * rc = (char *)cson_malloc(n+1, "cson_strdup"); if( ! rc ) return NULL; memset( rc, 0, n+1 ); rc[n] = 0; return strncpy( rc, src, n ); } #endif int cson_string_cmp_cstr_n( cson_string const * str, char const * other, unsigned int otherLen ) { if( ! other && !str ) return 0; else if( other && !str ) return 1; else if( str && !other ) return -1; else if( !otherLen ) return str->length ? 1 : 0; else if( !str->length ) return otherLen ? -1 : 0; else { unsigned const int max = (otherLen > str->length) ? otherLen : str->length; int const rc = strncmp( cson_string_cstr(str), other, max ); return ( (0 == rc) && (otherLen != str->length) ) ? (str->length < otherLen) ? -1 : 1 : rc; } } int cson_string_cmp_cstr( cson_string const * lhs, char const * rhs ) { return cson_string_cmp_cstr_n( lhs, rhs, (rhs&&*rhs) ? strlen(rhs) : 0 ); } int cson_string_cmp( cson_string const * lhs, cson_string const * rhs ) { return cson_string_cmp_cstr_n( lhs, cson_string_cstr(rhs), rhs ? rhs->length : 0 ); } /** If self is not NULL, *self is overwritten to have the undefined type. self is not cleaned up or freed. */ void cson_value_destroy_zero_it( cson_value * self ) { if( self ) { *self = cson_value_undef; } } /** A key/value pair collection. Each of these objects owns its key/value pointers, and they are cleaned up by cson_kvp_clean(). */ struct cson_kvp { cson_value * key; cson_value * value; }; #define cson_kvp_empty_m {NULL,NULL} static const cson_kvp cson_kvp_empty = cson_kvp_empty_m; /** @def CSON_OBJECT_PROPS_SORT If CSON_OBJECT_PROPS_SORT is set to a true value then qsort() and bsearch() are used to sort (upon insertion) and search cson_object::kvp property lists. This costs us a re-sort on each insertion but searching is O(log n) average/worst case (and O(1) best-case). i'm not yet convinced that the overhead of the qsort() justifies the potentially decreased search times - it has not been measured. Object property lists tend to be relatively short in JSON, and a linear search which uses the cson_string::length property as a quick check is quite fast when one compares it with the sort overhead required by the bsearch() approach. */ #define CSON_OBJECT_PROPS_SORT 0 /** @def CSON_OBJECT_PROPS_SORT_USE_LENGTH Don't use this - i'm not sure that it works how i'd like. If CSON_OBJECT_PROPS_SORT_USE_LENGTH is true then we use string lengths as quick checks when sorting property keys. This leads to a non-intuitive sorting order but "should" be faster. This is ignored if CSON_OBJECT_PROPS_SORT is false. */ #define CSON_OBJECT_PROPS_SORT_USE_LENGTH 0 #if CSON_OBJECT_PROPS_SORT /** cson_kvp comparator for use with qsort(). ALMOST compares with strcmp() semantics, but it uses the strings' lengths as a quicker approach. This might give non-intuitive results, but it's faster. */ static int cson_kvp_cmp( void const * lhs, void const * rhs ) { cson_kvp const * lk = *((cson_kvp const * const*)lhs); cson_kvp const * rk = *((cson_kvp const * const*)rhs); cson_string const * l = cson_string_value(lk->key); cson_string const * r = cson_string_value(rk->key); #if CSON_OBJECT_PROPS_SORT_USE_LENGTH if( l->length < r->length ) return -1; else if( l->length > r->length ) return 1; else return strcmp( cson_string_cstr( l ), cson_string_cstr( r ) ); #else return strcmp( cson_string_cstr( l ), cson_string_cstr( r ) ); #endif /*CSON_OBJECT_PROPS_SORT_USE_LENGTH*/ } #endif /*CSON_OBJECT_PROPS_SORT*/ #if CSON_OBJECT_PROPS_SORT #error "Need to rework this for cson_string-to-cson_value refactoring" /** A bsearch() comparison function which requires that lhs be a (char const *) and rhs be-a (cson_kvp const * const *). It compares lhs to rhs->key's value, using strcmp() semantics. */ static int cson_kvp_cmp_vs_cstr( void const * lhs, void const * rhs ) { char const * lk = (char const *)lhs; cson_kvp const * rk = *((cson_kvp const * const*)rhs) ; #if CSON_OBJECT_PROPS_SORT_USE_LENGTH unsigned int llen = strlen(lk); if( llen < rk->key->length ) return -1; else if( llen > rk->key->length ) return 1; else return strcmp( lk, cson_string_cstr( rk->key ) ); #else return strcmp( lk, cson_string_cstr( rk->key ) ); #endif /*CSON_OBJECT_PROPS_SORT_USE_LENGTH*/ } #endif /*CSON_OBJECT_PROPS_SORT*/ struct cson_kvp_list { cson_kvp ** list; unsigned int count; unsigned int alloced; }; typedef struct cson_kvp_list cson_kvp_list; #define cson_kvp_list_empty_m {NULL/*list*/,0/*count*/,0/*alloced*/} static const cson_kvp_list cson_kvp_list_empty = cson_kvp_list_empty_m; struct cson_object { cson_kvp_list kvp; }; /*typedef struct cson_object cson_object;*/ #define cson_object_empty_m { cson_kvp_list_empty_m/*kvp*/ } static const cson_object cson_object_empty = cson_object_empty_m; struct cson_value_list { cson_value ** list; unsigned int count; unsigned int alloced; }; typedef struct cson_value_list cson_value_list; #define cson_value_list_empty_m {NULL/*list*/,0/*count*/,0/*alloced*/} static const cson_value_list cson_value_list_empty = cson_value_list_empty_m; struct cson_array { cson_value_list list; }; /*typedef struct cson_array cson_array;*/ #define cson_array_empty_m { cson_value_list_empty_m/*list*/ } static const cson_array cson_array_empty = cson_array_empty_m; struct cson_parser { JSON_parser p; cson_value * root; cson_value * node; cson_array stack; cson_string * ckey; int errNo; unsigned int totalKeyCount; unsigned int totalValueCount; }; typedef struct cson_parser cson_parser; static const cson_parser cson_parser_empty = { NULL/*p*/, NULL/*root*/, NULL/*node*/, cson_array_empty_m/*stack*/, NULL/*ckey*/, 0/*errNo*/, 0/*totalKeyCount*/, 0/*totalValueCount*/ }; #if 1 /* The following funcs are declared in generated code (cson_lists.h), but we need early access to their decls for the Amalgamation build. */ static unsigned int cson_value_list_reserve( cson_value_list * self, unsigned int n ); static unsigned int cson_kvp_list_reserve( cson_kvp_list * self, unsigned int n ); static int cson_kvp_list_append( cson_kvp_list * self, cson_kvp * cp ); static void cson_kvp_list_clean( cson_kvp_list * self, void (*cleaner)(cson_kvp * obj) ); #if 0 static int cson_value_list_append( cson_value_list * self, cson_value * cp ); static void cson_value_list_clean( cson_value_list * self, void (*cleaner)(cson_value * obj)); static int cson_kvp_list_visit( cson_kvp_list * self, int (*visitor)(cson_kvp * obj, void * visitorState ), void * visitorState ); static int cson_value_list_visit( cson_value_list * self, int (*visitor)(cson_value * obj, void * visitorState ), void * visitorState ); #endif #endif #if 0 # define LIST_T cson_value_list # define VALUE_T cson_value * # define VALUE_T_IS_PTR 1 # define LIST_T cson_kvp_list # define VALUE_T cson_kvp * # define VALUE_T_IS_PTR 1 #else #endif /** Allocates a new value of the specified type ownership of it to the caller. It must eventually be destroyed, by the caller or its owning container, by passing it to cson_value_free() or transfering ownership to a container. extra is only valid for type CSON_TYPE_STRING, and must be the length of the string to allocate + 1 byte (for the NUL). The returned value->api member will be set appropriately and val->value will be set to point to the memory allocated to hold the native value type. Use the internal CSON_CAST() family of macros to convert them. Returns NULL on allocation error. @see cson_value_new_array() @see cson_value_new_object() @see cson_value_new_string() @see cson_value_new_integer() @see cson_value_new_double() @see cson_value_new_bool() @see cson_value_free() */ static cson_value * cson_value_new(cson_type_id t, size_t extra); cson_value * cson_value_new(cson_type_id t, size_t extra) { static const size_t vsz = sizeof(cson_value); const size_t sz = vsz + extra; size_t tx = 0; cson_value def = cson_value_undef; cson_value * v = NULL; char const * reason = "cson_value_new"; switch(t) { case CSON_TYPE_ARRAY: assert( 0 == extra ); def = cson_value_array_empty; tx = sizeof(cson_array); reason = "cson_value:array"; break; case CSON_TYPE_DOUBLE: assert( 0 == extra ); def = cson_value_double_empty; tx = sizeof(cson_double_t); reason = "cson_value:double"; break; case CSON_TYPE_INTEGER: assert( 0 == extra ); def = cson_value_integer_empty; tx = sizeof(cson_int_t); reason = "cson_value:int"; break; case CSON_TYPE_STRING: assert( 0 != extra ); def = cson_value_string_empty; tx = sizeof(cson_string); reason = "cson_value:string"; break; case CSON_TYPE_OBJECT: assert( 0 == extra ); def = cson_value_object_empty; tx = sizeof(cson_object); reason = "cson_value:object"; break; default: assert(0 && "Unhandled type in cson_value_new()!"); return NULL; } assert( def.api->typeID != CSON_TYPE_UNDEF ); v = (cson_value *)cson_malloc(sz+tx, reason); if( v ) { *v = def; if(tx || extra){ memset(v+1, 0, tx + extra); v->value = (void *)(v+1); } } return v; } void cson_value_free(cson_value *v) { cson_refcount_decr( v ); } #if 0 /* we might actually want this later on. */ /** Returns true if v is not NULL and has the given type ID. */ static char cson_value_is_a( cson_value const * v, cson_type_id is ) { return (v && v->api && (v->api->typeID == is)) ? 1 : 0; } #endif #if 0 cson_type_id cson_value_type_id( cson_value const * v ) { return (v && v->api) ? v->api->typeID : CSON_TYPE_UNDEF; } #endif char cson_value_is_undef( cson_value const * v ) { /** This special-case impl is needed because the underlying (generic) list operations do not know how to populate new entries */ return ( !v || !v->api || (v->api==&cson_value_api_undef)) ? 1 : 0; } #define ISA(T,TID) char cson_value_is_##T( cson_value const * v ) { \ /*return (v && v->api) ? cson_value_is_a(v,CSON_TYPE_##TID) : 0;*/ \ return (v && (v->api == &cson_value_api_##T)) ? 1 : 0; \ } static const char bogusPlaceHolderForEmacsIndention##TID = CSON_TYPE_##TID ISA(null,NULL); ISA(bool,BOOL); ISA(integer,INTEGER); ISA(double,DOUBLE); ISA(string,STRING); ISA(array,ARRAY); ISA(object,OBJECT); #undef ISA char cson_value_is_number( cson_value const * v ) { return cson_value_is_integer(v) || cson_value_is_double(v); } void cson_value_clean( cson_value * val ) { if( val && val->api && val->api->cleanup ) { if( ! cson_value_is_builtin( val ) ) { cson_counter_t const rc = val->refcount; val->api->cleanup(val); *val = cson_value_undef; val->refcount = rc; } } } static cson_value * cson_value_array_alloc() { cson_value * v = cson_value_new(CSON_TYPE_ARRAY,0); if( NULL != v ) { cson_array * ar = CSON_ARRAY(v); assert(NULL != ar); *ar = cson_array_empty; } return v; } static cson_value * cson_value_object_alloc() { cson_value * v = cson_value_new(CSON_TYPE_OBJECT,0); if( NULL != v ) { cson_object * obj = CSON_OBJ(v); assert(NULL != obj); *obj = cson_object_empty; } return v; } cson_value * cson_value_new_object() { return cson_value_object_alloc(); } cson_object * cson_new_object() { return cson_value_get_object( cson_value_new_object() ); } cson_value * cson_value_new_array() { return cson_value_array_alloc(); } cson_array * cson_new_array() { return cson_value_get_array( cson_value_new_array() ); } /** Frees kvp->key and kvp->value and sets them to NULL, but does not free kvp. If !kvp then this is a no-op. */ static void cson_kvp_clean( cson_kvp * kvp ) { if( kvp ) { if(kvp->key) { cson_value_free(kvp->key); kvp->key = NULL; } if(kvp->value) { cson_value_free( kvp->value ); kvp->value = NULL; } } } cson_string * cson_kvp_key( cson_kvp const * kvp ) { return kvp ? cson_value_get_string(kvp->key) : NULL; } cson_value * cson_kvp_value( cson_kvp const * kvp ) { return kvp ? kvp->value : NULL; } /** Calls cson_kvp_clean(kvp) and then frees kvp. */ static void cson_kvp_free( cson_kvp * kvp ) { if( kvp ) { cson_kvp_clean(kvp); cson_free(kvp,"cson_kvp"); } } /** cson_value_api::destroy_value() impl for Object values. Cleans up self-owned memory and overwrites self to have the undefined value, but does not free self. */ static void cson_value_destroy_object( cson_value * self ) { if(self && self->value) { cson_object * obj = (cson_object *)self->value; assert( self->value == obj ); cson_kvp_list_clean( &obj->kvp, cson_kvp_free ); *self = cson_value_undef; } } /** Cleans up the contents of ar->list, but does not free ar. After calling this, ar will have a length of 0. If properlyCleanValues is 1 then cson_value_free() is called on each non-NULL item, otherwise the outer list is destroyed but the individual items are assumed to be owned by someone else and are not freed. */ static void cson_array_clean( cson_array * ar, char properlyCleanValues ) { if( ar ) { unsigned int i = 0; cson_value * val = NULL; for( ; i < ar->list.count; ++i ) { val = ar->list.list[i]; if(val) { ar->list.list[i] = NULL; if( properlyCleanValues ) { cson_value_free( val ); } } } cson_value_list_reserve(&ar->list,0); ar->list = cson_value_list_empty /* Pedantic note: reserve(0) already clears the list-specific fields, but we do this just in case we ever add new fields to cson_value_list which are not used in the reserve() impl. */ ; } } /** cson_value_api::destroy_value() impl for Array values. Cleans up self-owned memory and overwrites self to have the undefined value, but does not free self. */ static void cson_value_destroy_array( cson_value * self ) { cson_array * ar = cson_value_get_array(self); if(ar) { assert( self->value == ar ); cson_array_clean( ar, 1 ); *self = cson_value_undef; } } int cson_buffer_fill_from( cson_buffer * dest, cson_data_source_f src, void * state ) { int rc; enum { BufSize = 1024 * 4 }; char rbuf[BufSize]; size_t total = 0; unsigned int rlen = 0; if( ! dest || ! src ) return cson_rc.ArgError; dest->used = 0; while(1) { rlen = BufSize; rc = src( state, rbuf, &rlen ); if( rc ) break; total += rlen; if( dest->capacity < (total+1) ) { rc = cson_buffer_reserve( dest, total + 1); if( 0 != rc ) break; } memcpy( dest->mem + dest->used, rbuf, rlen ); dest->used += rlen; if( rlen < BufSize ) break; } if( !rc && dest->used ) { assert( dest->used < dest->capacity ); dest->mem[dest->used] = 0; } return rc; } int cson_data_source_FILE( void * state, void * dest, unsigned int * n ) { FILE * f = (FILE*) state; if( ! state || ! n || !dest ) return cson_rc.ArgError; else if( !*n ) return cson_rc.RangeError; *n = (unsigned int)fread( dest, 1, *n, f ); if( !*n ) { return feof(f) ? 0 : cson_rc.IOError; } return 0; } int cson_parse_FILE( cson_value ** tgt, FILE * src, cson_parse_opt const * opt, cson_parse_info * err ) { return cson_parse( tgt, cson_data_source_FILE, src, opt, err ); } int cson_value_fetch_bool( cson_value const * val, char * v ) { /** FIXME: move the to-bool operation into cson_value_api, like we do in the C++ API. */ if( ! val || !val->api ) return cson_rc.ArgError; else { int rc = 0; char b = 0; switch( val->api->typeID ) { case CSON_TYPE_ARRAY: case CSON_TYPE_OBJECT: b = 1; break; case CSON_TYPE_STRING: { char const * str = cson_string_cstr(cson_value_get_string(val)); b = (str && *str) ? 1 : 0; break; } case CSON_TYPE_UNDEF: case CSON_TYPE_NULL: break; case CSON_TYPE_BOOL: b = (NULL==val->value) ? 0 : 1; break; case CSON_TYPE_INTEGER: { cson_int_t i = 0; cson_value_fetch_integer( val, &i ); b = i ? 1 : 0; break; } case CSON_TYPE_DOUBLE: { cson_double_t d = 0.0; cson_value_fetch_double( val, &d ); b = (0.0==d) ? 0 : 1; break; } default: rc = cson_rc.TypeError; break; } if( v ) *v = b; return rc; } } char cson_value_get_bool( cson_value const * val ) { char i = 0; cson_value_fetch_bool( val, &i ); return i; } int cson_value_fetch_integer( cson_value const * val, cson_int_t * v ) { if( ! val || !val->api ) return cson_rc.ArgError; else { cson_int_t i = 0; int rc = 0; switch(val->api->typeID) { case CSON_TYPE_UNDEF: case CSON_TYPE_NULL: i = 0; break; case CSON_TYPE_BOOL: { char b = 0; cson_value_fetch_bool( val, &b ); i = b; break; } case CSON_TYPE_INTEGER: { cson_int_t const * x = CSON_INT(val); if(!x) { assert( val == &CSON_SPECIAL_VALUES[CSON_VAL_INT_0] ); } i = x ? *x : 0; break; } case CSON_TYPE_DOUBLE: { cson_double_t d = 0.0; cson_value_fetch_double( val, &d ); i = (cson_int_t)d; break; } case CSON_TYPE_STRING: case CSON_TYPE_ARRAY: case CSON_TYPE_OBJECT: default: break; } if(v) *v = i; return rc; } } cson_int_t cson_value_get_integer( cson_value const * val ) { cson_int_t i = 0; cson_value_fetch_integer( val, &i ); return i; } int cson_value_fetch_double( cson_value const * val, cson_double_t * v ) { if( ! val || !val->api ) return cson_rc.ArgError; else { cson_double_t d = 0.0; int rc = 0; switch(val->api->typeID) { case CSON_TYPE_UNDEF: case CSON_TYPE_NULL: d = 0; break; case CSON_TYPE_BOOL: { char b = 0; cson_value_fetch_bool( val, &b ); d = b ? 1.0 : 0.0; break; } case CSON_TYPE_INTEGER: { cson_int_t i = 0; cson_value_fetch_integer( val, &i ); d = i; break; } case CSON_TYPE_DOUBLE: { cson_double_t const* dv = CSON_DBL(val); d = dv ? *dv : 0.0; break; } default: rc = cson_rc.TypeError; break; } if(v) *v = d; return rc; } } cson_double_t cson_value_get_double( cson_value const * val ) { cson_double_t i = 0.0; cson_value_fetch_double( val, &i ); return i; } int cson_value_fetch_string( cson_value const * val, cson_string ** dest ) { if( ! val || ! dest ) return cson_rc.ArgError; else if( ! cson_value_is_string(val) ) return cson_rc.TypeError; else { if( dest ) *dest = CSON_STR(val); return 0; } } cson_string * cson_value_get_string( cson_value const * val ) { cson_string * rc = NULL; cson_value_fetch_string( val, &rc ); return rc; } char const * cson_value_get_cstr( cson_value const * val ) { return cson_string_cstr( cson_value_get_string(val) ); } int cson_value_fetch_object( cson_value const * val, cson_object ** obj ) { if( ! val ) return cson_rc.ArgError; else if( ! cson_value_is_object(val) ) return cson_rc.TypeError; else { if(obj) *obj = CSON_OBJ(val); return 0; } } cson_object * cson_value_get_object( cson_value const * v ) { cson_object * obj = NULL; cson_value_fetch_object( v, &obj ); return obj; } int cson_value_fetch_array( cson_value const * val, cson_array ** ar) { if( ! val ) return cson_rc.ArgError; else if( !cson_value_is_array(val) ) return cson_rc.TypeError; else { if(ar) *ar = CSON_ARRAY(val); return 0; } } cson_array * cson_value_get_array( cson_value const * v ) { cson_array * ar = NULL; cson_value_fetch_array( v, &ar ); return ar; } cson_kvp * cson_kvp_alloc() { cson_kvp * kvp = (cson_kvp*)cson_malloc(sizeof(cson_kvp),"cson_kvp"); if( kvp ) { *kvp = cson_kvp_empty; } return kvp; } int cson_array_append( cson_array * ar, cson_value * v ) { if( !ar || !v ) return cson_rc.ArgError; else if( (ar->list.count+1) < ar->list.count ) return cson_rc.RangeError; else { if( !ar->list.alloced || (ar->list.count == ar->list.alloced-1)) { unsigned int const n = ar->list.count ? (ar->list.count*2) : 7; if( n > cson_value_list_reserve( &ar->list, n ) ) { return cson_rc.AllocError; } } return cson_array_set( ar, ar->list.count, v ); } } #if 0 /** Removes and returns the last value from the given array, shrinking its size by 1. Returns NULL if ar is NULL, ar->list.count is 0, or the element at that index is NULL. If removeRef is true then cson_value_free() is called to remove ar's reference count for the value. In that case NULL is returned, even if the object still has live references. If removeRef is false then the caller takes over ownership of that reference count point. If removeRef is false then the caller takes over ownership of the return value, otherwise ownership is effectively determined by any remaining references for the returned value. */ static cson_value * cson_array_pop_back( cson_array * ar, char removeRef ) { if( !ar ) return NULL; else if( ! ar->list.count ) return NULL; else { unsigned int const ndx = --ar->list.count; cson_value * v = ar->list.list[ndx]; ar->list.list[ndx] = NULL; if( removeRef ) { cson_value_free( v ); v = NULL; } return v; } } #endif cson_value * cson_value_new_bool( char v ) { return v ? &CSON_SPECIAL_VALUES[CSON_VAL_TRUE] : &CSON_SPECIAL_VALUES[CSON_VAL_FALSE]; } cson_value * cson_value_true() { return &CSON_SPECIAL_VALUES[CSON_VAL_TRUE]; } cson_value * cson_value_false() { return &CSON_SPECIAL_VALUES[CSON_VAL_FALSE]; } cson_value * cson_value_null() { return &CSON_SPECIAL_VALUES[CSON_VAL_NULL]; } cson_value * cson_new_int( cson_int_t v ) { return cson_value_new_integer(v); } cson_value * cson_value_new_integer( cson_int_t v ) { if( 0 == v ) return &CSON_SPECIAL_VALUES[CSON_VAL_INT_0]; else { cson_value * c = cson_value_new(CSON_TYPE_INTEGER,0); if( c ) { *CSON_INT(c) = v; } return c; } } cson_value * cson_new_double( cson_double_t v ) { return cson_value_new_double(v); } cson_value * cson_value_new_double( cson_double_t v ) { if( 0.0 == v ) return &CSON_SPECIAL_VALUES[CSON_VAL_DBL_0]; else { cson_value * c = cson_value_new(CSON_TYPE_DOUBLE,0); if( c ) { *CSON_DBL(c) = v; } return c; } } cson_string * cson_new_string(char const * str, unsigned int len) { if( !str || !*str || !len ) return &CSON_EMPTY_HOLDER.stringValue; else { cson_value * c = cson_value_new(CSON_TYPE_STRING, len + 1/*NUL byte*/); cson_string * s = NULL; if( c ) { char * dest = NULL; s = CSON_STR(c); *s = cson_string_empty; assert( NULL != s ); s->length = len; dest = cson_string_str(s); assert( NULL != dest ); memcpy( dest, str, len ); dest[len] = 0; } return s; } } cson_value * cson_value_new_string( char const * str, unsigned int len ) { return cson_string_value( cson_new_string(str, len) ); } int cson_array_value_fetch( cson_array const * ar, unsigned int pos, cson_value ** v ) { if( !ar) return cson_rc.ArgError; if( pos >= ar->list.count ) return cson_rc.RangeError; else { if(v) *v = ar->list.list[pos]; return 0; } } cson_value * cson_array_get( cson_array const * ar, unsigned int pos ) { cson_value *v = NULL; cson_array_value_fetch(ar, pos, &v); return v; } int cson_array_length_fetch( cson_array const * ar, unsigned int * v ) { if( ! ar || !v ) return cson_rc.ArgError; else { if(v) *v = ar->list.count; return 0; } } unsigned int cson_array_length_get( cson_array const * ar ) { unsigned int i = 0; cson_array_length_fetch(ar, &i); return i; } int cson_array_reserve( cson_array * ar, unsigned int size ) { if( ! ar ) return cson_rc.ArgError; else if( size <= ar->list.alloced ) { /* We don't want to introduce a can of worms by trying to handle the cleanup from here. */ return 0; } else { return (ar->list.alloced > cson_value_list_reserve( &ar->list, size )) ? cson_rc.AllocError : 0 ; } } int cson_array_set( cson_array * ar, unsigned int ndx, cson_value * v ) { if( !ar || !v ) return cson_rc.ArgError; else if( (ndx+1) < ndx) /* overflow */return cson_rc.RangeError; else { unsigned const int len = cson_value_list_reserve( &ar->list, ndx+1 ); if( len <= ndx ) return cson_rc.AllocError; else { cson_value * old = ar->list.list[ndx]; if( old ) { if(old == v) return 0; else cson_value_free(old); } cson_refcount_incr( v ); ar->list.list[ndx] = v; if( ndx >= ar->list.count ) { ar->list.count = ndx+1; } return 0; } } } /** @internal Searchs for the given key in the given object. Returns the found item on success, NULL on error. If ndx is not NULL, it is set to the index (in obj->kvp.list) of the found item. *ndx is not modified if no entry is found. */ static cson_kvp * cson_object_search_impl( cson_object const * obj, char const * key, unsigned int * ndx ) { if( obj && key && *key && obj->kvp.count) { #if CSON_OBJECT_PROPS_SORT cson_kvp ** s = (cson_kvp**) bsearch( key, obj->kvp.list, obj->kvp.count, sizeof(cson_kvp*), cson_kvp_cmp_vs_cstr ); if( ndx && s ) { /* index of found record is required by cson_object_unset(). Calculate the offset based on s...*/ #if 0 *ndx = (((unsigned char const *)s - ((unsigned char const *)obj->kvp.list)) / sizeof(cson_kvp*)); #else *ndx = s - obj->kvp.list; #endif } return s ? *s : NULL; #else cson_kvp_list const * li = &obj->kvp; unsigned int i = 0; cson_kvp * kvp; const unsigned int klen = strlen(key); for( ; i < li->count; ++i ) { cson_string const * sKey; kvp = li->list[i]; assert( kvp && kvp->key ); sKey = cson_value_get_string(kvp->key); assert(sKey); if( sKey->length != klen ) continue; else if(0==strcmp(key,cson_string_cstr(sKey))) { if(ndx) *ndx = i; return kvp; } } #endif } return NULL; } cson_value * cson_object_get( cson_object const * obj, char const * key ) { cson_kvp * kvp = cson_object_search_impl( obj, key, NULL ); return kvp ? kvp->value : NULL; } cson_value * cson_object_get_s( cson_object const * obj, cson_string const *key ) { cson_kvp * kvp = cson_object_search_impl( obj, cson_string_cstr(key), NULL ); return kvp ? kvp->value : NULL; } #if CSON_OBJECT_PROPS_SORT static void cson_object_sort_props( cson_object * obj ) { assert( NULL != obj ); if( obj->kvp.count ) { qsort( obj->kvp.list, obj->kvp.count, sizeof(cson_kvp*), cson_kvp_cmp ); } } #endif int cson_object_unset( cson_object * obj, char const * key ) { if( ! obj || !key || !*key ) return cson_rc.ArgError; else { unsigned int ndx = 0; cson_kvp * kvp = cson_object_search_impl( obj, key, &ndx ); if( ! kvp ) { return cson_rc.NotFoundError; } assert( obj->kvp.count > 0 ); assert( obj->kvp.list[ndx] == kvp ); cson_kvp_free( kvp ); obj->kvp.list[ndx] = NULL; { /* if my brain were bigger i'd use memmove(). */ unsigned int i = ndx; for( ; i < obj->kvp.count; ++i ) { obj->kvp.list[i] = (i < (obj->kvp.alloced-1)) ? obj->kvp.list[i+1] : NULL; } } obj->kvp.list[--obj->kvp.count] = NULL; #if CSON_OBJECT_PROPS_SORT cson_object_sort_props( obj ); #endif return 0; } } int cson_object_set_s( cson_object * obj, cson_string * key, cson_value * v ) { if( !obj || !key ) return cson_rc.ArgError; else if( NULL == v ) return cson_object_unset( obj, cson_string_cstr(key) ); else { char const * cKey; cson_value * vKey; cson_kvp * kvp; vKey = cson_string_value(key); assert(vKey && (key==CSON_STR(vKey))); if( vKey == CSON_VCAST(obj) ){ return cson_rc.ArgError; } cKey = cson_string_cstr(key); kvp = cson_object_search_impl( obj, cKey, NULL ); if( kvp ) { /* "I told 'em we've already got one!" */ if( kvp->key != vKey ){ cson_value_free( kvp->key ); cson_refcount_incr(vKey); kvp->key = vKey; } if(kvp->value != v){ cson_value_free( kvp->value ); cson_refcount_incr( v ); kvp->value = v; } return 0; } if( !obj->kvp.alloced || (obj->kvp.count == obj->kvp.alloced-1)) { unsigned int const n = obj->kvp.count ? (obj->kvp.count*2) : 6; if( n > cson_kvp_list_reserve( &obj->kvp, n ) ) { return cson_rc.AllocError; } } { /* insert new item... */ int rc = 0; kvp = cson_kvp_alloc(); if( ! kvp ) { return cson_rc.AllocError; } rc = cson_kvp_list_append( &obj->kvp, kvp ); if( 0 != rc ) { cson_kvp_free(kvp); } else { cson_refcount_incr(vKey); cson_refcount_incr(v); kvp->key = vKey; kvp->value = v; #if CSON_OBJECT_PROPS_SORT cson_object_sort_props( obj ); #endif } return rc; } } } int cson_object_set( cson_object * obj, char const * key, cson_value * v ) { if( ! obj || !key || !*key ) return cson_rc.ArgError; else if( NULL == v ) { return cson_object_unset( obj, key ); } else { cson_string * cs = cson_new_string(key,strlen(key)); if(!cs) return cson_rc.AllocError; else { int const rc = cson_object_set_s(obj, cs, v); if(rc) cson_value_free(cson_string_value(cs)); return rc; } } } cson_value * cson_object_take( cson_object * obj, char const * key ) { if( ! obj || !key || !*key ) return NULL; else { /* FIXME: this is 90% identical to cson_object_unset(), only with different refcount handling. Consolidate them. */ unsigned int ndx = 0; cson_kvp * kvp = cson_object_search_impl( obj, key, &ndx ); cson_value * rc = NULL; if( ! kvp ) { return NULL; } assert( obj->kvp.count > 0 ); assert( obj->kvp.list[ndx] == kvp ); rc = kvp->value; assert( rc ); kvp->value = NULL; cson_kvp_free( kvp ); assert( rc->refcount > 0 ); --rc->refcount; obj->kvp.list[ndx] = NULL; { /* if my brain were bigger i'd use memmove(). */ unsigned int i = ndx; for( ; i < obj->kvp.count; ++i ) { obj->kvp.list[i] = (i < (obj->kvp.alloced-1)) ? obj->kvp.list[i+1] : NULL; } } obj->kvp.list[--obj->kvp.count] = NULL; #if CSON_OBJECT_PROPS_SORT cson_object_sort_props( obj ); #endif return rc; } } /** @internal If p->node is-a Object then value is inserted into the object using p->key. In any other case cson_rc.InternalError is returned. Returns cson_rc.AllocError if an allocation fails. Returns 0 on success. On error, parsing must be ceased immediately. Ownership of val is ALWAYS TRANSFERED to this function. If this function fails, val will be cleaned up and destroyed. (This simplifies error handling in the core parser.) */ static int cson_parser_set_key( cson_parser * p, cson_value * val ) { assert( p && val ); if( p->ckey && cson_value_is_object(p->node) ) { int rc; cson_object * obj = cson_value_get_object(p->node); cson_kvp * kvp = NULL; assert( obj && (p->node->value == obj) ); /** FIXME? Use cson_object_set() instead of our custom finagling with the object? We do it this way to avoid an extra alloc/strcpy of the key data. */ if( !obj->kvp.alloced || (obj->kvp.count == obj->kvp.alloced-1)) { if( obj->kvp.alloced > cson_kvp_list_reserve( &obj->kvp, obj->kvp.count ? (obj->kvp.count*2) : 5 ) ) { cson_value_free(val); return cson_rc.AllocError; } } kvp = cson_kvp_alloc(); if( ! kvp ) { cson_value_free(val); return cson_rc.AllocError; } kvp->key = cson_string_value(p->ckey)/*transfer ownership*/; p->ckey = NULL; kvp->value = val; cson_refcount_incr( val ); rc = cson_kvp_list_append( &obj->kvp, kvp ); if( 0 != rc ) { cson_kvp_free( kvp ); } else { ++p->totalValueCount; } return rc; } else { if(val) cson_value_free(val); return p->errNo = cson_rc.InternalError; } } /** @internal Pushes val into the current object/array parent node, depending on the internal state of the parser. Ownership of val is always transfered to this function, regardless of success or failure. Returns 0 on success. On error, parsing must be ceased immediately. */ static int cson_parser_push_value( cson_parser * p, cson_value * val ) { if( p->ckey ) { /* we're in Object mode */ assert( cson_value_is_object( p->node ) ); return cson_parser_set_key( p, val ); } else if( cson_value_is_array( p->node ) ) { /* we're in Array mode */ cson_array * ar = cson_value_get_array( p->node ); int rc; assert( ar && (ar == p->node->value) ); rc = cson_array_append( ar, val ); if( 0 != rc ) { cson_value_free(val); } else { ++p->totalValueCount; } return rc; } else { /* WTF? */ assert( 0 && "Internal error in cson_parser code" ); return p->errNo = cson_rc.InternalError; } } /** Callback for JSON_parser API. Reminder: it returns 0 (meaning false) on error! */ static int cson_parse_callback( void * cx, int type, JSON_value const * value ) { cson_parser * p = (cson_parser *)cx; int rc = 0; #define ALLOC_V(T,V) cson_value * v = cson_value_new_##T(V); if( ! v ) { rc = cson_rc.AllocError; break; } switch(type) { case JSON_T_ARRAY_BEGIN: case JSON_T_OBJECT_BEGIN: { cson_value * obja = (JSON_T_ARRAY_BEGIN == type) ? cson_value_new_array() : cson_value_new_object(); if( ! obja ) { p->errNo = cson_rc.AllocError; return 0; } if( 0 != rc ) break; if( ! p->root ) { p->root = p->node = obja; rc = cson_array_append( &p->stack, obja ); if( 0 != rc ) { /* work around a (potential) corner case in the cleanup code. */ cson_value_free( p->root ); p->root = NULL; } else { cson_refcount_incr( p->root ) /* simplifies cleanup later on. */ ; ++p->totalValueCount; } } else { rc = cson_array_append( &p->stack, obja ); if( 0 == rc ) rc = cson_parser_push_value( p, obja ); if( 0 == rc ) p->node = obja; } break; } case JSON_T_ARRAY_END: case JSON_T_OBJECT_END: { if( 0 == p->stack.list.count ) { rc = cson_rc.RangeError; break; } #if CSON_OBJECT_PROPS_SORT if( cson_value_is_object(p->node) ) {/* kludge: the parser uses custom cson_object property insertion as a malloc/strcpy-reduction optimization. Because of that, we have to sort the property list ourselves... */ cson_object * obj = cson_value_get_object(p->node); assert( NULL != obj ); cson_object_sort_props( obj ); } #endif #if 1 /* Reminder: do not use cson_array_pop_back( &p->stack ) because that will clean up the object, and we don't want that. We just want to forget this reference to it. The object is either the root or was pushed into an object/array in the parse tree (and is owned by that object/array). */ --p->stack.list.count; assert( p->node == p->stack.list.list[p->stack.list.count] ); cson_refcount_decr( p->node ) /* p->node might be owned by an outer object but we need to remove the list's reference. For the root node we manually add a reference to avoid a special case here. Thus when we close the root node, its refcount is still 1. */; p->stack.list.list[p->stack.list.count] = NULL; if( p->stack.list.count ) { p->node = p->stack.list.list[p->stack.list.count-1]; } else { p->node = p->root; } #else /* Causing a leak? */ cson_array_pop_back( &p->stack, 1 ); if( p->stack.list.count ) { p->node = p->stack.list.list[p->stack.list.count-1]; } else { p->node = p->root; } assert( p->node && (1==p->node->refcount) ); #endif break; } case JSON_T_INTEGER: { ALLOC_V(integer, value->vu.integer_value ); rc = cson_parser_push_value( p, v ); break; } case JSON_T_FLOAT: { ALLOC_V(double, value->vu.float_value ); rc = cson_parser_push_value( p, v ); break; } case JSON_T_NULL: { rc = cson_parser_push_value( p, cson_value_null() ); break; } case JSON_T_TRUE: { rc = cson_parser_push_value( p, cson_value_true() ); break; } case JSON_T_FALSE: { rc = cson_parser_push_value( p, cson_value_false() ); break; } case JSON_T_KEY: { assert(!p->ckey); p->ckey = cson_new_string( value->vu.str.value, value->vu.str.length ); if( ! p->ckey ) { rc = cson_rc.AllocError; break; } ++p->totalKeyCount; break; } case JSON_T_STRING: { cson_value * v = cson_value_new_string( value->vu.str.value, value->vu.str.length ); rc = ( NULL == v ) ? cson_rc.AllocError : cson_parser_push_value( p, v ); break; } default: assert(0); rc = cson_rc.InternalError; break; } #undef ALLOC_V return ((p->errNo = rc)) ? 0 : 1; } /** Converts a JSON_error code to one of the cson_rc values. */ static int cson_json_err_to_rc( JSON_error jrc ) { switch(jrc) { case JSON_E_NONE: return 0; case JSON_E_INVALID_CHAR: return cson_rc.Parse_INVALID_CHAR; case JSON_E_INVALID_KEYWORD: return cson_rc.Parse_INVALID_KEYWORD; case JSON_E_INVALID_ESCAPE_SEQUENCE: return cson_rc.Parse_INVALID_ESCAPE_SEQUENCE; case JSON_E_INVALID_UNICODE_SEQUENCE: return cson_rc.Parse_INVALID_UNICODE_SEQUENCE; case JSON_E_INVALID_NUMBER: return cson_rc.Parse_INVALID_NUMBER; case JSON_E_NESTING_DEPTH_REACHED: return cson_rc.Parse_NESTING_DEPTH_REACHED; case JSON_E_UNBALANCED_COLLECTION: return cson_rc.Parse_UNBALANCED_COLLECTION; case JSON_E_EXPECTED_KEY: return cson_rc.Parse_EXPECTED_KEY; case JSON_E_EXPECTED_COLON: return cson_rc.Parse_EXPECTED_COLON; case JSON_E_OUT_OF_MEMORY: return cson_rc.AllocError; default: return cson_rc.InternalError; } } /** @internal Cleans up all contents of p but does not free p. To properly take over ownership of the parser's root node on a successful parse: - Copy p->root's pointer and set p->root to NULL. - Eventually free up p->root with cson_value_free(). If you do not set p->root to NULL, p->root will be freed along with any other items inserted into it (or under it) during the parsing process. */ static int cson_parser_clean( cson_parser * p ) { if( ! p ) return cson_rc.ArgError; else { if( p->p ) { delete_JSON_parser(p->p); p->p = NULL; } if( p->ckey ){ cson_value_free(cson_string_value(p->ckey)); } cson_array_clean( &p->stack, 1 ); if( p->root ) { cson_value_free( p->root ); } *p = cson_parser_empty; return 0; } } int cson_parse( cson_value ** tgt, cson_data_source_f src, void * state, cson_parse_opt const * opt_, cson_parse_info * info_ ) { unsigned char ch[2] = {0,0}; cson_parse_opt const opt = opt_ ? *opt_ : cson_parse_opt_empty; int rc = 0; unsigned int len = 1; cson_parse_info info = info_ ? *info_ : cson_parse_info_empty; cson_parser p = cson_parser_empty; if( ! tgt || ! src ) return cson_rc.ArgError; { JSON_config jopt = {0}; init_JSON_config( &jopt ); jopt.allow_comments = opt.allowComments; jopt.depth = opt.maxDepth; jopt.callback_ctx = &p; jopt.handle_floats_manually = 0; jopt.callback = cson_parse_callback; p.p = new_JSON_parser(&jopt); if( ! p.p ) { return cson_rc.AllocError; } } do { /* FIXME: buffer the input in multi-kb chunks. */ len = 1; ch[0] = 0; rc = src( state, ch, &len ); if( 0 != rc ) break; else if( !len /* EOF */ ) break; ++info.length; if('\n' == ch[0]) { ++info.line; info.col = 0; } if( ! JSON_parser_char(p.p, ch[0]) ) { rc = cson_json_err_to_rc( JSON_parser_get_last_error(p.p) ); if(0==rc) rc = p.errNo; if(0==rc) rc = cson_rc.InternalError; info.errorCode = rc; break; } if( '\n' != ch[0]) ++info.col; } while(1); if( info_ ) { info.totalKeyCount = p.totalKeyCount; info.totalValueCount = p.totalValueCount; *info_ = info; } if( 0 != rc ) { cson_parser_clean(&p); return rc; } if( ! JSON_parser_done(p.p) ) { rc = cson_json_err_to_rc( JSON_parser_get_last_error(p.p) ); cson_parser_clean(&p); if(0==rc) rc = p.errNo; if(0==rc) rc = cson_rc.InternalError; } else { cson_value * root = p.root; p.root = NULL; cson_parser_clean(&p); if( root ) { assert( (1 == root->refcount) && "Detected memory mismanagement in the parser." ); root->refcount = 0 /* HUGE KLUDGE! Avoids having one too many references in some client code, leading to a leak. Here we're accommodating a memory management workaround in the parser code which manually adds a reference to the root node to keep it from being cleaned up prematurely. */; *tgt = root; } else { /* then can happen on empty input. */ rc = cson_rc.UnknownError; } } return rc; } /** The UTF code was originally taken from sqlite3's public-domain source code (http://sqlite.org), modified only slightly for use here. This code generates some "possible data loss" warnings on MSVC, but if this code is good enough for sqlite3 then it's damned well good enough for me, so we disable that warning for Windows builds. */ /* ** This lookup table is used to help decode the first byte of ** a multi-byte UTF8 character. */ static const unsigned char cson_utfTrans1[] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03, 0x00, 0x01, 0x00, 0x00 }; /* ** Translate a single UTF-8 character. Return the unicode value. ** ** During translation, assume that the byte that zTerm points ** is a 0x00. ** ** Write a pointer to the next unread byte back into *pzNext. ** ** Notes On Invalid UTF-8: ** ** * This routine never allows a 7-bit character (0x00 through 0x7f) to ** be encoded as a multi-byte character. Any multi-byte character that ** attempts to encode a value between 0x00 and 0x7f is rendered as 0xfffd. ** ** * This routine never allows a UTF16 surrogate value to be encoded. ** If a multi-byte character attempts to encode a value between ** 0xd800 and 0xe000 then it is rendered as 0xfffd. ** ** * Bytes in the range of 0x80 through 0xbf which occur as the first ** byte of a character are interpreted as single-byte characters ** and rendered as themselves even though they are technically ** invalid characters. ** ** * This routine accepts an infinite number of different UTF8 encodings ** for unicode values 0x80 and greater. It do not change over-length ** encodings to 0xfffd as some systems recommend. */ #define READ_UTF8(zIn, zTerm, c) \ c = *(zIn++); \ if( c>=0xc0 ){ \ c = cson_utfTrans1[c-0xc0]; \ while( zIn!=zTerm && (*zIn & 0xc0)==0x80 ){ \ c = (c<<6) + (0x3f & *(zIn++)); \ } \ if( c<0x80 \ || (c&0xFFFFF800)==0xD800 \ || (c&0xFFFFFFFE)==0xFFFE ){ c = 0xFFFD; } \ } static int cson_utf8Read( const unsigned char *z, /* First byte of UTF-8 character */ const unsigned char *zTerm, /* Pretend this byte is 0x00 */ const unsigned char **pzNext /* Write first byte past UTF-8 char here */ ){ int c; READ_UTF8(z, zTerm, c); *pzNext = z; return c; } #undef READ_UTF8 #if defined(_WIN32) # pragma warning( pop ) #endif unsigned int cson_string_length_utf8( cson_string const * str ) { if( ! str ) return 0; else { char unsigned const * pos = (char unsigned const *)cson_string_cstr(str); char unsigned const * end = pos + str->length; unsigned int rc = 0; for( ; (pos < end) && cson_utf8Read(pos, end, &pos); ++rc ) { }; return rc; } } /** Escapes the first len bytes of the given string as JSON and sends it to the given output function (which will be called often - once for each logical character). The output is also surrounded by double-quotes. A NULL str will be escaped as an empty string, though we should arguably export it as "null" (without quotes). We do this because in JavaScript (typeof null === "object"), and by outputing null here we would effectively change the data type from string to object. */ static int cson_str_to_json( char const * str, unsigned int len, char escapeFwdSlash, cson_data_dest_f f, void * state ) { if( NULL == f ) return cson_rc.ArgError; else if( !str || !*str || (0 == len) ) { /* special case for 0-length strings. */ return f( state, "\"\"", 2 ); } else { unsigned char const * pos = (unsigned char const *)str; unsigned char const * end = (unsigned char const *)(str ? (str + len) : NULL); unsigned char const * next = NULL; int ch; unsigned char clen = 0; char escChar[3] = {'\\',0,0}; enum { UBLen = 8 }; char ubuf[UBLen]; int rc = 0; rc = f(state, "\"", 1 ); for( ; (pos < end) && (0 == rc); pos += clen ) { ch = cson_utf8Read(pos, end, &next); if( 0 == ch ) break; assert( next > pos ); clen = next - pos; assert( clen ); if( 1 == clen ) { /* ASCII */ assert( *pos == ch ); escChar[1] = 0; switch(ch) { case '\t': escChar[1] = 't'; break; case '\r': escChar[1] = 'r'; break; case '\n': escChar[1] = 'n'; break; case '\f': escChar[1] = 'f'; break; case '\b': escChar[1] = 'b'; break; case '/': /* Regarding escaping of forward-slashes. See the main exchange below... -------------- From: Douglas Crockford <douglas@crockford.com> To: Stephan Beal <sgbeal@googlemail.com> Subject: Re: Is escaping of forward slashes required? It is allowed, not required. It is allowed so that JSON can be safely embedded in HTML, which can freak out when seeing strings containing "</". JSON tolerates "<\/" for this reason. On 4/8/2011 2:09 PM, Stephan Beal wrote: > Hello, Jsonites, > > i'm a bit confused on a small grammatic detail of JSON: > > if i'm reading the grammar chart on http://www.json.org/ correctly, > forward slashes (/) are supposed to be escaped in JSON. However, the > JSON class provided with my browsers (Chrome and FF, both of which i > assume are fairly standards/RFC-compliant) do not escape such characters. > > Is backslash-escaping forward slashes required? If so, what is the > justification for it? (i ask because i find it unnecessary and hard to > look at.) -------------- */ if( escapeFwdSlash ) escChar[1] = '/'; break; case '\\': escChar[1] = '\\'; break; case '"': escChar[1] = '"'; break; default: break; } if( escChar[1]) { rc = f(state, escChar, 2); } else { rc = f(state, (char const *)pos, clen); } continue; } else { /* UTF: transform it to \uXXXX */ memset(ubuf,0,UBLen); rc = sprintf(ubuf, "\\u%04x",ch); if( rc != 6 ) { rc = cson_rc.RangeError; break; } rc = f( state, ubuf, 6 ); continue; } } if( 0 == rc ) { rc = f(state, "\"", 1 ); } return rc; } } int cson_object_iter_init( cson_object const * obj, cson_object_iterator * iter ) { if( ! obj || !iter ) return cson_rc.ArgError; else { iter->obj = obj; iter->pos = 0; return 0; } } cson_kvp * cson_object_iter_next( cson_object_iterator * iter ) { if( ! iter || !iter->obj ) return NULL; else if( iter->pos >= iter->obj->kvp.count ) return NULL; else { cson_kvp * rc = iter->obj->kvp.list[iter->pos++]; while( (NULL==rc) && (iter->pos < iter->obj->kvp.count)) { rc = iter->obj->kvp.list[iter->pos++]; } return rc; } } static int cson_output_null( cson_data_dest_f f, void * state ) { if( !f ) return cson_rc.ArgError; else { return f(state, "null", 4); } } static int cson_output_bool( cson_value const * src, cson_data_dest_f f, void * state ) { if( !f ) return cson_rc.ArgError; else { char const v = cson_value_get_bool(src); return f(state, v ? "true" : "false", v ? 4 : 5); } } static int cson_output_integer( cson_value const * src, cson_data_dest_f f, void * state ) { if( !f ) return cson_rc.ArgError; else if( !cson_value_is_integer(src) ) return cson_rc.TypeError; else { enum { BufLen = 100 }; char b[BufLen]; int rc; memset( b, 0, BufLen ); rc = sprintf( b, "%"CSON_INT_T_PFMT, cson_value_get_integer(src) ) /* Reminder: snprintf() is C99 */ ; return ( rc<=0 ) ? cson_rc.RangeError : f( state, b, (unsigned int)rc ) ; } } static int cson_output_double( cson_value const * src, cson_data_dest_f f, void * state ) { if( !f ) return cson_rc.ArgError; else if( !cson_value_is_double(src) ) return cson_rc.TypeError; else { enum { BufLen = 128 /* this must be relatively large or huge doubles can cause us to overrun here, resulting in stack-smashing errors. */}; char b[BufLen]; int rc; memset( b, 0, BufLen ); rc = sprintf( b, "%"CSON_DOUBLE_T_PFMT, cson_value_get_double(src) ) /* Reminder: snprintf() is C99 */ ; if( rc<=0 ) return cson_rc.RangeError; else if(1) { /* Strip trailing zeroes before passing it on... */ unsigned int urc = (unsigned int)rc; char * pos = b + urc - 1; for( ; ('0' == *pos) && urc && (*(pos-1) != '.'); --pos, --urc ) { *pos = 0; } assert(urc && *pos); return f( state, b, urc ); } else { unsigned int urc = (unsigned int)rc; return f( state, b, urc ); } return 0; } } static int cson_output_string( cson_value const * src, char escapeFwdSlash, cson_data_dest_f f, void * state ) { if( !f ) return cson_rc.ArgError; else if( ! cson_value_is_string(src) ) return cson_rc.TypeError; else { cson_string const * str = cson_value_get_string(src); assert( NULL != str ); return cson_str_to_json(cson_string_cstr(str), str->length, escapeFwdSlash, f, state); } } /** Outputs indention spacing to f(). blanks: (0)=no indentation, (1)=1 TAB per/level, (>1)=n spaces/level depth is the current depth of the output tree, and determines how much indentation to generate. If blanks is 0 this is a no-op. Returns non-0 on error, and the error code will always come from f(). */ static int cson_output_indent( cson_data_dest_f f, void * state, unsigned char blanks, unsigned int depth ) { if( 0 == blanks ) return 0; else { #if 0 /* FIXME: stuff the indention into the buffer and make a single call to f(). */ enum { BufLen = 200 }; char buf[BufLen]; #endif unsigned int i; unsigned int x; char const ch = (1==blanks) ? '\t' : ' '; int rc = f(state, "\n", 1 ); for( i = 0; (i < depth) && (0 == rc); ++i ) { for( x = 0; (x < blanks) && (0 == rc); ++x ) { rc = f(state, &ch, 1); } } return rc; } } static int cson_output_array( cson_value const * src, cson_data_dest_f f, void * state, cson_output_opt const * fmt, unsigned int level ); static int cson_output_object( cson_value const * src, cson_data_dest_f f, void * state, cson_output_opt const * fmt, unsigned int level ); /** Main cson_output() implementation. Dispatches to a different impl depending on src->api->typeID. Returns 0 on success. */ static int cson_output_impl( cson_value const * src, cson_data_dest_f f, void * state, cson_output_opt const * fmt, unsigned int level ) { if( ! src || !f || !src->api ) return cson_rc.ArgError; else { int rc = 0; assert(fmt); switch( src->api->typeID ) { case CSON_TYPE_UNDEF: case CSON_TYPE_NULL: rc = cson_output_null(f, state); break; case CSON_TYPE_BOOL: rc = cson_output_bool(src, f, state); break; case CSON_TYPE_INTEGER: rc = cson_output_integer(src, f, state); break; case CSON_TYPE_DOUBLE: rc = cson_output_double(src, f, state); break; case CSON_TYPE_STRING: rc = cson_output_string(src, fmt->escapeForwardSlashes, f, state); break; case CSON_TYPE_ARRAY: rc = cson_output_array( src, f, state, fmt, level ); break; case CSON_TYPE_OBJECT: rc = cson_output_object( src, f, state, fmt, level ); break; default: rc = cson_rc.TypeError; break; } return rc; } } static int cson_output_array( cson_value const * src, cson_data_dest_f f, void * state, cson_output_opt const * fmt, unsigned int level ) { if( !src || !f || !fmt ) return cson_rc.ArgError; else if( ! cson_value_is_array(src) ) return cson_rc.TypeError; else if( level > fmt->maxDepth ) return cson_rc.RangeError; else { int rc; unsigned int i; cson_value const * v; char doIndent = fmt->indentation ? 1 : 0; cson_array const * ar = cson_value_get_array(src); assert( NULL != ar ); if( 0 == ar->list.count ) { return f(state, "[]", 2 ); } else if( (1 == ar->list.count) && !fmt->indentSingleMemberValues ) doIndent = 0; rc = f(state, "[", 1); ++level; if( doIndent ) { rc = cson_output_indent( f, state, fmt->indentation, level ); } for( i = 0; (i < ar->list.count) && (0 == rc); ++i ) { v = ar->list.list[i]; if( v ) { rc = cson_output_impl( v, f, state, fmt, level ); } else { rc = cson_output_null( f, state ); } if( 0 == rc ) { if(i < (ar->list.count-1)) { rc = f(state, ",", 1); if( 0 == rc ) { rc = doIndent ? cson_output_indent( f, state, fmt->indentation, level ) : f( state, " ", 1 ); } } } } --level; if( doIndent && (0 == rc) ) { rc = cson_output_indent( f, state, fmt->indentation, level ); } return (0 == rc) ? f(state, "]", 1) : rc; } } static int cson_output_object( cson_value const * src, cson_data_dest_f f, void * state, cson_output_opt const * fmt, unsigned int level ) { if( !src || !f || !fmt ) return cson_rc.ArgError; else if( ! cson_value_is_object(src) ) return cson_rc.TypeError; else if( level > fmt->maxDepth ) return cson_rc.RangeError; else { int rc; unsigned int i; cson_kvp const * kvp; char doIndent = fmt->indentation ? 1 : 0; cson_object const * obj = cson_value_get_object(src); assert( (NULL != obj) && (NULL != fmt)); if( 0 == obj->kvp.count ) { return f(state, "{}", 2 ); } else if( (1 == obj->kvp.count) && !fmt->indentSingleMemberValues ) doIndent = 0; rc = f(state, "{", 1); ++level; if( doIndent ) { rc = cson_output_indent( f, state, fmt->indentation, level ); } for( i = 0; (i < obj->kvp.count) && (0 == rc); ++i ) { kvp = obj->kvp.list[i]; if( kvp && kvp->key ) { cson_string const * sKey = cson_value_get_string(kvp->key); char const * cKey = cson_string_cstr(sKey); rc = cson_str_to_json(cKey, sKey->length, fmt->escapeForwardSlashes, f, state); if( 0 == rc ) { rc = fmt->addSpaceAfterColon ? f(state, ": ", 2 ) : f(state, ":", 1 ) ; } if( 0 == rc) { rc = ( kvp->value ) ? cson_output_impl( kvp->value, f, state, fmt, level ) : cson_output_null( f, state ); } } else { assert( 0 && "Possible internal error." ); continue /* internal error? */; } if( 0 == rc ) { if(i < (obj->kvp.count-1)) { rc = f(state, ",", 1); if( 0 == rc ) { rc = doIndent ? cson_output_indent( f, state, fmt->indentation, level ) : f( state, " ", 1 ); } } } } --level; if( doIndent && (0 == rc) ) { rc = cson_output_indent( f, state, fmt->indentation, level ); } return (0 == rc) ? f(state, "}", 1) : rc; } } int cson_output( cson_value const * src, cson_data_dest_f f, void * state, cson_output_opt const * fmt ) { int rc; if(! fmt ) fmt = &cson_output_opt_empty; rc = cson_output_impl(src, f, state, fmt, 0 ); if( (0 == rc) && fmt->addNewline ) { rc = f(state, "\n", 1); } return rc; } int cson_data_dest_FILE( void * state, void const * src, unsigned int n ) { if( ! state ) return cson_rc.ArgError; else if( !src || !n ) return 0; else { return ( 1 == fwrite( src, n, 1, (FILE*) state ) ) ? 0 : cson_rc.IOError; } } int cson_output_FILE( cson_value const * src, FILE * dest, cson_output_opt const * fmt ) { int rc = 0; if( fmt ) { rc = cson_output( src, cson_data_dest_FILE, dest, fmt ); } else { /* We normally want a newline on FILE output. */ cson_output_opt opt = cson_output_opt_empty; opt.addNewline = 1; rc = cson_output( src, cson_data_dest_FILE, dest, &opt ); } if( 0 == rc ) { fflush( dest ); } return rc; } int cson_output_filename( cson_value const * src, char const * dest, cson_output_opt const * fmt ) { if( !src || !dest ) return cson_rc.ArgError; else { FILE * f = fopen(dest,"wb"); if( !f ) return cson_rc.IOError; else { int const rc = cson_output_FILE( src, f, fmt ); fclose(f); return rc; } } } int cson_parse_filename( cson_value ** tgt, char const * src, cson_parse_opt const * opt, cson_parse_info * err ) { if( !src || !tgt ) return cson_rc.ArgError; else { FILE * f = fopen(src, "r"); if( !f ) return cson_rc.IOError; else { int const rc = cson_parse_FILE( tgt, f, opt, err ); fclose(f); return rc; } } } /** Internal type to hold state for a JSON input string. */ typedef struct cson_data_source_StringSource_ { /** Start of input string. */ char const * str; /** Current iteration position. Must initially be == str. */ char const * pos; /** Logical EOF, one-past-the-end of str. */ char const * end; } cson_data_source_StringSource_t; /** A cson_data_source_f() implementation which requires the state argument to be a properly populated (cson_data_source_StringSource_t*). */ static int cson_data_source_StringSource( void * state, void * dest, unsigned int * n ) { if( !state || !n || !dest ) return cson_rc.ArgError; else if( !*n ) return 0 /* ignore this */; else { unsigned int i; cson_data_source_StringSource_t * ss = (cson_data_source_StringSource_t*) state; unsigned char * tgt = (unsigned char *)dest; for( i = 0; (i < *n) && (ss->pos < ss->end); ++i, ++ss->pos, ++tgt ) { *tgt = *ss->pos; } *n = i; return 0; } } int cson_parse_string( cson_value ** tgt, char const * src, unsigned int len, cson_parse_opt const * opt, cson_parse_info * err ) { if( ! tgt || !src ) return cson_rc.ArgError; else if( !*src || (len<2/*2==len of {} and []*/) ) return cson_rc.RangeError; else { cson_data_source_StringSource_t ss; ss.str = ss.pos = src; ss.end = src + len; return cson_parse( tgt, cson_data_source_StringSource, &ss, opt, err ); } } int cson_parse_buffer( cson_value ** tgt, cson_buffer const * buf, cson_parse_opt const * opt, cson_parse_info * err ) { return ( !tgt || !buf || !buf->mem || !buf->used ) ? cson_rc.ArgError : cson_parse_string( tgt, (char const *)buf->mem, buf->used, opt, err ); } int cson_buffer_reserve( cson_buffer * buf, cson_size_t n ) { if( ! buf ) return cson_rc.ArgError; else if( 0 == n ) { cson_free(buf->mem, "cson_buffer::mem"); *buf = cson_buffer_empty; return 0; } else if( buf->capacity >= n ) { return 0; } else { unsigned char * x = (unsigned char *)realloc( buf->mem, n ); if( ! x ) return cson_rc.AllocError; memset( x + buf->used, 0, n - buf->used ); buf->mem = x; buf->capacity = n; ++buf->timesExpanded; return 0; } } cson_size_t cson_buffer_fill( cson_buffer * buf, char c ) { if( !buf || !buf->capacity || !buf->mem ) return 0; else { memset( buf->mem, c, buf->capacity ); return buf->capacity; } } /** cson_data_dest_f() implementation, used by cson_output_buffer(). arg MUST be a (cson_buffer*). This function appends n bytes at position arg->used, expanding the buffer as necessary. */ static int cson_data_dest_cson_buffer( void * arg, void const * data_, unsigned int n ) { if( ! arg || (n<0) ) return cson_rc.ArgError; else if( ! n ) return 0; else { cson_buffer * sb = (cson_buffer*)arg; char const * data = (char const *)data_; cson_size_t npos = sb->used + n; unsigned int i; if( npos >= sb->capacity ) { const cson_size_t oldCap = sb->capacity; const cson_size_t asz = npos * 2; if( asz < npos ) return cson_rc.ArgError; /* overflow */ else if( 0 != cson_buffer_reserve( sb, asz ) ) return cson_rc.AllocError; assert( (sb->capacity > oldCap) && "Internal error in memory buffer management!" ); /* make sure it gets NULL terminated. */ memset( sb->mem + oldCap, 0, (sb->capacity - oldCap) ); } for( i = 0; i < n; ++i, ++sb->used ) { sb->mem[sb->used] = data[i]; } return 0; } } int cson_output_buffer( cson_value const * v, cson_buffer * buf, cson_output_opt const * opt ) { int rc = cson_output( v, cson_data_dest_cson_buffer, buf, opt ); if( 0 == rc ) { /* Ensure that the buffer is null-terminated. */ rc = cson_buffer_reserve( buf, buf->used + 1 ); if( 0 == rc ) { buf->mem[buf->used] = 0; } } return rc; } /** @internal Tokenizes an input string on a given separator. Inputs are: - (inp) = is a pointer to the pointer to the start of the input. - (separator) = the separator character - (end) = a pointer to NULL. i.e. (*end == NULL) This function scans *inp for the given separator char or a NULL char. Successive separators at the start of *inp are skipped. The effect is that, when this function is called in a loop, all neighboring separators are ignored. e.g. the string "aa.bb...cc" will tokenize to the list (aa,bb,cc) if the separator is '.' and to (aa.,...cc) if the separator is 'b'. Returns 0 (false) if it finds no token, else non-0 (true). Output: - (*inp) will be set to the first character of the next token. - (*end) will point to the one-past-the-end point of the token. If (*inp == *end) then the end of the string has been reached without finding a token. Post-conditions: - (*end == *inp) if no token is found. - (*end > *inp) if a token is found. It is intolerant of NULL values for (inp, end), and will assert() in debug builds if passed NULL as either parameter. */ static char cson_next_token( char const ** inp, char separator, char const ** end ) { char const * pos = NULL; assert( inp && end && *inp ); if( *inp == *end ) return 0; pos = *inp; if( !*pos ) { *end = pos; return 0; } for( ; *pos && (*pos == separator); ++pos) { /* skip preceeding splitters */ } *inp = pos; for( ; *pos && (*pos != separator); ++pos) { /* find next splitter */ } *end = pos; return (pos > *inp) ? 1 : 0; } int cson_object_fetch_sub2( cson_object const * obj, cson_value ** tgt, char const * path ) { if( ! obj || !path ) return cson_rc.ArgError; else if( !*path || !*(1+path) ) return cson_rc.RangeError; else return cson_object_fetch_sub(obj, tgt, path+1, *path); } int cson_object_fetch_sub( cson_object const * obj, cson_value ** tgt, char const * path, char sep ) { if( ! obj || !path ) return cson_rc.ArgError; else if( !*path || !sep ) return cson_rc.RangeError; else { char const * beg = path; char const * end = NULL; int rc; unsigned int i, len; unsigned int tokenCount = 0; cson_value * cv = NULL; cson_object const * curObj = obj; enum { BufSize = 128 }; char buf[BufSize]; memset( buf, 0, BufSize ); rc = cson_rc.RangeError; while( cson_next_token( &beg, sep, &end ) ) { if( beg == end ) break; else { ++tokenCount; beg = end; end = NULL; } } if( 0 == tokenCount ) return cson_rc.RangeError; beg = path; end = NULL; for( i = 0; i < tokenCount; ++i, beg=end, end=NULL ) { rc = cson_next_token( &beg, sep, &end ); assert( 1 == rc ); assert( beg != end ); assert( end > beg ); len = end - beg; if( len > (BufSize-1) ) return cson_rc.RangeError; memset( buf, 0, len + 1 ); memcpy( buf, beg, len ); buf[len] = 0; cv = cson_object_get( curObj, buf ); if( NULL == cv ) return cson_rc.NotFoundError; else if( i == (tokenCount-1) ) { if(tgt) *tgt = cv; return 0; } else if( cson_value_is_object(cv) ) { curObj = cson_value_get_object(cv); assert((NULL != curObj) && "Detected mis-management of internal memory!"); } /* TODO: arrays. Requires numeric parsing for the index. */ else { return cson_rc.NotFoundError; } } assert( i == tokenCount ); return cson_rc.NotFoundError; } } cson_value * cson_object_get_sub( cson_object const * obj, char const * path, char sep ) { cson_value * v = NULL; cson_object_fetch_sub( obj, &v, path, sep ); return v; } cson_value * cson_object_get_sub2( cson_object const * obj, char const * path ) { cson_value * v = NULL; cson_object_fetch_sub2( obj, &v, path ); return v; } static cson_value * cson_value_clone_array( cson_value const * orig ) { unsigned int i = 0; cson_array const * asrc = cson_value_get_array( orig ); unsigned int alen = cson_array_length_get( asrc ); cson_value * destV = NULL; cson_array * destA = NULL; assert( orig && asrc ); destV = cson_value_new_array(); if( NULL == destV ) return NULL; destA = cson_value_get_array( destV ); assert( destA ); if( 0 != cson_array_reserve( destA, alen ) ) { cson_value_free( destV ); return NULL; } for( ; i < alen; ++i ) { cson_value * ch = cson_array_get( asrc, i ); if( NULL != ch ) { cson_value * cl = cson_value_clone( ch ); if( NULL == cl ) { cson_value_free( destV ); return NULL; } if( 0 != cson_array_set( destA, i, cl ) ) { cson_value_free( cl ); cson_value_free( destV ); return NULL; } } } return destV; } static cson_value * cson_value_clone_object( cson_value const * orig ) { cson_object const * src = cson_value_get_object( orig ); cson_value * destV = NULL; cson_object * dest = NULL; cson_kvp const * kvp = NULL; cson_object_iterator iter = cson_object_iterator_empty; assert( orig && src ); if( 0 != cson_object_iter_init( src, &iter ) ) { return NULL; } destV = cson_value_new_object(); if( NULL == destV ) return NULL; dest = cson_value_get_object( destV ); assert( dest ); if( src->kvp.count > cson_kvp_list_reserve( &dest->kvp, src->kvp.count ) ){ cson_value_free( destV ); return NULL; } while( (kvp = cson_object_iter_next( &iter )) ) { /* FIXME: refcount the keys! We first need a setter which takes a cson_string or cson_value key type. */ cson_value * key = NULL; cson_value * val = NULL; key = cson_value_clone(kvp->key); val = key ? cson_value_clone( kvp->value ) : NULL; if( ! key || !val ){ cson_value_free(key); cson_value_free(val); cson_value_free(destV); return NULL; } assert( CSON_STR(key) ); if( 0 != cson_object_set_s( dest, CSON_STR(key), val ) ) { cson_value_free(key); cson_value_free(val); cson_value_free(destV); return NULL; } } return destV; } cson_value * cson_value_clone( cson_value const * orig ) { if( NULL == orig ) return NULL; else { switch( orig->api->typeID ) { case CSON_TYPE_UNDEF: assert(0 && "This should never happen."); return NULL; case CSON_TYPE_NULL: return cson_value_null(); case CSON_TYPE_BOOL: return cson_value_new_bool( cson_value_get_bool( orig ) ); case CSON_TYPE_INTEGER: return cson_value_new_integer( cson_value_get_integer( orig ) ); break; case CSON_TYPE_DOUBLE: return cson_value_new_double( cson_value_get_double( orig ) ); break; case CSON_TYPE_STRING: { cson_string const * str = cson_value_get_string( orig ); return cson_value_new_string( cson_string_cstr( str ), cson_string_length_bytes( str ) ); } case CSON_TYPE_ARRAY: return cson_value_clone_array( orig ); case CSON_TYPE_OBJECT: return cson_value_clone_object( orig ); } assert( 0 && "We can't get this far." ); return NULL; } } cson_value * cson_string_value(cson_string const * s) { #define MT CSON_SPECIAL_VALUES[CSON_VAL_STR_EMPTY] return s ? ((s==MT.value) ? &MT : CSON_VCAST(s)) : NULL; #undef MT } cson_value * cson_object_value(cson_object const * s) { return s ? CSON_VCAST(s) : NULL; } cson_value * cson_array_value(cson_array const * s) { return s ? CSON_VCAST(s) : NULL; } void cson_free_object(cson_object *x) { if(x) cson_value_free(cson_object_value(x)); } void cson_free_array(cson_array *x) { if(x) cson_value_free(cson_array_value(x)); } void cson_free_string(cson_string const *x) { if(x) cson_value_free(cson_string_value(x)); } void cson_free_value(cson_value *x) { cson_value_free(x); } #if 0 /* i'm not happy with this... */ char * cson_pod_to_string( cson_value const * orig ) { if( ! orig ) return NULL; else { enum { BufSize = 64 }; char * v = NULL; switch( orig->api->typeID ) { case CSON_TYPE_BOOL: { char const bv = cson_value_get_bool(orig); v = cson_strdup( bv ? "true" : "false", bv ? 4 : 5 ); break; } case CSON_TYPE_UNDEF: case CSON_TYPE_NULL: { v = cson_strdup( "null", 4 ); break; } case CSON_TYPE_STRING: { cson_string const * jstr = cson_value_get_string(orig); unsigned const int slen = cson_string_length_bytes( jstr ); assert( NULL != jstr ); v = cson_strdup( cson_string_cstr( jstr ), slen ); break; } case CSON_TYPE_INTEGER: { char buf[BufSize] = {0}; if( 0 < sprintf( v, "%"CSON_INT_T_PFMT, cson_value_get_integer(orig)) ) { v = cson_strdup( buf, strlen(buf) ); } break; } case CSON_TYPE_DOUBLE: { char buf[BufSize] = {0}; if( 0 < sprintf( v, "%"CSON_DOUBLE_T_PFMT, cson_value_get_double(orig)) ) { v = cson_strdup( buf, strlen(buf) ); } break; } default: break; } return v; } } #endif #if 0 /* i'm not happy with this... */ char * cson_pod_to_string( cson_value const * orig ) { if( ! orig ) return NULL; else { enum { BufSize = 64 }; char * v = NULL; switch( orig->api->typeID ) { case CSON_TYPE_BOOL: { char const bv = cson_value_get_bool(orig); v = cson_strdup( bv ? "true" : "false", bv ? 4 : 5 ); break; } case CSON_TYPE_UNDEF: case CSON_TYPE_NULL: { v = cson_strdup( "null", 4 ); break; } case CSON_TYPE_STRING: { cson_string const * jstr = cson_value_get_string(orig); unsigned const int slen = cson_string_length_bytes( jstr ); assert( NULL != jstr ); v = cson_strdup( cson_string_cstr( jstr ), slen ); break; } case CSON_TYPE_INTEGER: { char buf[BufSize] = {0}; if( 0 < sprintf( v, "%"CSON_INT_T_PFMT, cson_value_get_integer(orig)) ) { v = cson_strdup( buf, strlen(buf) ); } break; } case CSON_TYPE_DOUBLE: { char buf[BufSize] = {0}; if( 0 < sprintf( v, "%"CSON_DOUBLE_T_PFMT, cson_value_get_double(orig)) ) { v = cson_strdup( buf, strlen(buf) ); } break; } default: break; } return v; } } #endif unsigned int cson_value_msize(cson_value const * v) { if(!v) return 0; else if( cson_value_is_builtin(v) ) return 0; else { unsigned int rc = sizeof(cson_value); assert(NULL != v->api); switch(v->api->typeID){ case CSON_TYPE_INTEGER: assert( v != &CSON_SPECIAL_VALUES[CSON_VAL_INT_0]); rc += sizeof(cson_int_t); break; case CSON_TYPE_DOUBLE: assert( v != &CSON_SPECIAL_VALUES[CSON_VAL_DBL_0]); rc += sizeof(cson_double_t); break; case CSON_TYPE_STRING: rc += sizeof(cson_string) + CSON_STR(v)->length + 1/*NUL*/; break; case CSON_TYPE_ARRAY:{ cson_array const * ar = CSON_ARRAY(v); cson_value_list const * li; unsigned int i = 0; assert( NULL != ar ); li = &ar->list; rc += sizeof(cson_array) + (li->alloced * sizeof(cson_value *)); for( ; i < li->count; ++i ){ cson_value const * e = ar->list.list[i]; if( e ) rc += cson_value_msize( e ); } break; } case CSON_TYPE_OBJECT:{ cson_object const * obj = CSON_OBJ(v); unsigned int i = 0; cson_kvp_list const * kl; assert(NULL != obj); kl = &obj->kvp; rc += sizeof(cson_object) + (kl->alloced * sizeof(cson_kvp*)); for( ; i < kl->count; ++i ){ cson_kvp const * kvp = kl->list[i]; assert(NULL != kvp); rc += cson_value_msize(kvp->key); rc += cson_value_msize(kvp->value); } break; } case CSON_TYPE_UNDEF: case CSON_TYPE_NULL: case CSON_TYPE_BOOL: assert( 0 && "Should have been caught by is-builtin check!" ); break; default: assert(0 && "Invalid typeID!"); return 0; } return rc; } } int cson_object_merge( cson_object * dest, cson_object const * src, int flags ){ cson_object_iterator iter = cson_object_iterator_empty; int rc; char const replace = (flags & CSON_MERGE_REPLACE); char const recurse = !(flags & CSON_MERGE_NO_RECURSE); cson_kvp const * kvp; if((!dest || !src) || (dest==src)) return cson_rc.ArgError; rc = cson_object_iter_init( src, &iter ); if(rc) return rc; while( (kvp = cson_object_iter_next(&iter) ) ) { cson_string * key = cson_kvp_key(kvp); cson_value * val = cson_kvp_value(kvp); cson_value * check = cson_object_get_s( dest, key ); if(!check){ cson_object_set_s( dest, key, val ); continue; } else if(!replace && !recurse) continue; else if(replace && !recurse){ cson_object_set_s( dest, key, val ); continue; } else if( recurse ){ if( cson_value_is_object(check) && cson_value_is_object(val) ){ rc = cson_object_merge( cson_value_get_object(check), cson_value_get_object(val), flags ); if(rc) return rc; else continue; } else continue; } else continue; } return 0; } #if defined(__cplusplus) } /*extern "C"*/ #endif #undef MARKER #undef CSON_OBJECT_PROPS_SORT #undef CSON_OBJECT_PROPS_SORT_USE_LENGTH #undef CSON_CAST #undef CSON_INT #undef CSON_DBL #undef CSON_STR #undef CSON_OBJ #undef CSON_ARRAY #undef CSON_VCAST #undef CSON_MALLOC_IMPL #undef CSON_FREE_IMPL #undef CSON_REALLOC_IMPL /* end file ./cson.c */ /* begin file ./cson_lists.h */ /* Auto-generated from cson_list.h. Edit at your own risk! */ unsigned int cson_value_list_reserve( cson_value_list * self, unsigned int n ) { if( !self ) return 0; else if(0 == n) { if(0 == self->alloced) return 0; cson_free(self->list, "cson_value_list_reserve"); self->list = NULL; self->alloced = self->count = 0; return 0; } else if( self->alloced >= n ) { return self->alloced; } else { size_t const sz = sizeof(cson_value *) * n; cson_value * * m = (cson_value **)cson_realloc( self->list, sz, "cson_value_list_reserve" ); if( ! m ) return self->alloced; memset( m + self->alloced, 0, (sizeof(cson_value *)*(n-self->alloced))); self->alloced = n; self->list = m; return n; } } int cson_value_list_append( cson_value_list * self, cson_value * cp ) { if( !self || !cp ) return cson_rc.ArgError; else if( self->alloced > cson_value_list_reserve(self, self->count+1) ) { return cson_rc.AllocError; } else { self->list[self->count++] = cp; return 0; } } int cson_value_list_visit( cson_value_list * self, int (*visitor)(cson_value * obj, void * visitorState ), void * visitorState ) { int rc = cson_rc.ArgError; if( self && visitor ) { unsigned int i = 0; for( rc = 0; (i < self->count) && (0 == rc); ++i ) { cson_value * obj = self->list[i]; if(obj) rc = visitor( obj, visitorState ); } } return rc; } void cson_value_list_clean( cson_value_list * self, void (*cleaner)(cson_value * obj) ) { if( self && cleaner && self->count ) { unsigned int i = 0; for( ; i < self->count; ++i ) { cson_value * obj = self->list[i]; if(obj) cleaner(obj); } } cson_value_list_reserve(self,0); } unsigned int cson_kvp_list_reserve( cson_kvp_list * self, unsigned int n ) { if( !self ) return 0; else if(0 == n) { if(0 == self->alloced) return 0; cson_free(self->list, "cson_kvp_list_reserve"); self->list = NULL; self->alloced = self->count = 0; return 0; } else if( self->alloced >= n ) { return self->alloced; } else { size_t const sz = sizeof(cson_kvp *) * n; cson_kvp * * m = (cson_kvp **)cson_realloc( self->list, sz, "cson_kvp_list_reserve" ); if( ! m ) return self->alloced; memset( m + self->alloced, 0, (sizeof(cson_kvp *)*(n-self->alloced))); self->alloced = n; self->list = m; return n; } } int cson_kvp_list_append( cson_kvp_list * self, cson_kvp * cp ) { if( !self || !cp ) return cson_rc.ArgError; else if( self->alloced > cson_kvp_list_reserve(self, self->count+1) ) { return cson_rc.AllocError; } else { self->list[self->count++] = cp; return 0; } } int cson_kvp_list_visit( cson_kvp_list * self, int (*visitor)(cson_kvp * obj, void * visitorState ), void * visitorState ) { int rc = cson_rc.ArgError; if( self && visitor ) { unsigned int i = 0; for( rc = 0; (i < self->count) && (0 == rc); ++i ) { cson_kvp * obj = self->list[i]; if(obj) rc = visitor( obj, visitorState ); } } return rc; } void cson_kvp_list_clean( cson_kvp_list * self, void (*cleaner)(cson_kvp * obj) ) { if( self && cleaner && self->count ) { unsigned int i = 0; for( ; i < self->count; ++i ) { cson_kvp * obj = self->list[i]; if(obj) cleaner(obj); } } cson_kvp_list_reserve(self,0); } /* end file ./cson_lists.h */ /* begin file ./cson_sqlite3.c */ /** @file cson_sqlite3.c This file contains the implementation code for the cson sqlite3-to-JSON API. License: the same as the cson core library. Author: Stephan Beal (http://wanderinghorse.net/home/stephan) */ #if CSON_ENABLE_SQLITE3 /* we do this here for the sake of the amalgamation build */ #include <assert.h> #include <string.h> /* strlen() */ #if 0 #include <stdio.h> #define MARKER if(1) printf("MARKER: %s:%d:%s():\t",__FILE__,__LINE__,__func__); if(1) printf #else #define MARKER if(0) printf #endif #if defined(__cplusplus) extern "C" { #endif cson_value * cson_sqlite3_column_to_value( sqlite3_stmt * st, int col ) { if( ! st ) return NULL; else { #if 0 sqlite3_value * val = sqlite3_column_type(st,col); int const vtype = val ? sqlite3_value_type(val) : -1; if( ! val ) return cson_value_null(); #else int const vtype = sqlite3_column_type(st,col); #endif switch( vtype ) { case SQLITE_NULL: return cson_value_null(); case SQLITE_INTEGER: /* FIXME: for large integers fall back to Double instead. */ return cson_value_new_integer( (cson_int_t) sqlite3_column_int64(st, col) ); case SQLITE_FLOAT: return cson_value_new_double( sqlite3_column_double(st, col) ); case SQLITE_BLOB: /* arguably fall through... */ case SQLITE_TEXT: { char const * str = (char const *)sqlite3_column_text(st,col); return cson_value_new_string(str, str ? strlen(str) : 0); } default: return NULL; } } } cson_value * cson_sqlite3_column_names( sqlite3_stmt * st ) { cson_value * aryV = NULL; cson_array * ary = NULL; char const * colName = NULL; int i = 0; int rc = 0; int colCount = 0; assert(st); colCount = sqlite3_column_count(st); if( colCount <= 0 ) return NULL; aryV = cson_value_new_array(); if( ! aryV ) return NULL; ary = cson_value_get_array(aryV); assert(ary); for( i = 0; (0 ==rc) && (i < colCount); ++i ) { colName = sqlite3_column_name( st, i ); if( ! colName ) rc = cson_rc.AllocError; else { rc = cson_array_set( ary, (unsigned int)i, cson_value_new_string(colName, strlen(colName)) ); } } if( 0 == rc ) return aryV; else { cson_value_free(aryV); return NULL; } } cson_value * cson_sqlite3_row_to_object2( sqlite3_stmt * st, cson_array * colNames ) { cson_value * rootV = NULL; cson_object * root = NULL; cson_string * colName = NULL; int i = 0; int rc = 0; cson_value * currentValue = NULL; int const colCount = sqlite3_column_count(st); if( !colCount || (colCount>cson_array_length_get(colNames)) ) { return NULL; } rootV = cson_value_new_object(); if(!rootV) return NULL; root = cson_value_get_object(rootV); for( i = 0; i < colCount; ++i ) { colName = cson_value_get_string( cson_array_get( colNames, i ) ); if( ! colName ) goto error; currentValue = cson_sqlite3_column_to_value(st,i); if( ! currentValue ) currentValue = cson_value_null(); rc = cson_object_set_s( root, colName, currentValue ); if( 0 != rc ) { cson_value_free( currentValue ); goto error; } } goto end; error: cson_value_free( rootV ); rootV = NULL; end: return rootV; } cson_value * cson_sqlite3_row_to_object( sqlite3_stmt * st ) { #if 0 cson_value * arV = cson_sqlite3_column_names(st); cson_array * ar = NULL; cson_value * rc = NULL; if(!arV) return NULL; ar = cson_value_get_array(arV); assert( NULL != ar ); rc = cson_sqlite3_row_to_object2(st, ar); cson_value_free(arV); return rc; #else cson_value * rootV = NULL; cson_object * root = NULL; char const * colName = NULL; int i = 0; int rc = 0; cson_value * currentValue = NULL; int const colCount = sqlite3_column_count(st); if( !colCount ) return NULL; rootV = cson_value_new_object(); if(!rootV) return NULL; root = cson_value_get_object(rootV); for( i = 0; i < colCount; ++i ) { colName = sqlite3_column_name( st, i ); if( ! colName ) goto error; currentValue = cson_sqlite3_column_to_value(st,i); if( ! currentValue ) currentValue = cson_value_null(); rc = cson_object_set( root, colName, currentValue ); if( 0 != rc ) { cson_value_free( currentValue ); goto error; } } goto end; error: cson_value_free( rootV ); rootV = NULL; end: return rootV; #endif } cson_value * cson_sqlite3_row_to_array( sqlite3_stmt * st ) { cson_value * aryV = NULL; cson_array * ary = NULL; int i = 0; int rc = 0; int const colCount = sqlite3_column_count(st); if( ! colCount ) return NULL; aryV = cson_value_new_array(); if( ! aryV ) return NULL; ary = cson_value_get_array(aryV); rc = cson_array_reserve(ary, (unsigned int) colCount ); if( 0 != rc ) goto error; for( i = 0; i < colCount; ++i ){ cson_value * elem = cson_sqlite3_column_to_value(st,i); if( ! elem ) goto error; rc = cson_array_append(ary,elem); if(0!=rc) { cson_value_free( elem ); goto end; } } goto end; error: cson_value_free(aryV); aryV = NULL; end: return aryV; } /** Internal impl of cson_sqlite3_stmt_to_json() when the 'fat' parameter is non-0. */ static int cson_sqlite3_stmt_to_json_fat( sqlite3_stmt * st, cson_value ** tgt ) { #define RETURN(RC) { if(rootV) cson_value_free(rootV); return RC; } if( ! tgt || !st ) return cson_rc.ArgError; else { cson_value * rootV = NULL; cson_object * root = NULL; cson_value * colsV = NULL; cson_array * cols = NULL; cson_value * rowsV = NULL; cson_array * rows = NULL; cson_value * objV = NULL; int rc = 0; int const colCount = sqlite3_column_count(st); if( colCount <= 0 ) return cson_rc.ArgError; rootV = cson_value_new_object(); if( ! rootV ) return cson_rc.AllocError; colsV = cson_sqlite3_column_names(st); if( ! colsV ) { cson_value_free( rootV ); RETURN(cson_rc.AllocError); } cols = cson_value_get_array(colsV); assert(NULL != cols); root = cson_value_get_object(rootV); rc = cson_object_set( root, "columns", colsV ); if( rc ) { cson_value_free( colsV ); RETURN(rc); } rowsV = cson_value_new_array(); if( ! rowsV ) RETURN(cson_rc.AllocError); rc = cson_object_set( root, "rows", rowsV ); if( rc ) { cson_value_free( rowsV ); RETURN(rc); } rows = cson_value_get_array(rowsV); assert(rows); while( SQLITE_ROW == sqlite3_step(st) ) { objV = cson_sqlite3_row_to_object2(st, cols); if( ! objV ) RETURN(cson_rc.UnknownError); rc = cson_array_append( rows, objV ); if( rc ) { cson_value_free( objV ); RETURN(rc); } } *tgt = rootV; return 0; } #undef RETURN } /** Internal impl of cson_sqlite3_stmt_to_json() when the 'fat' parameter is 0. */ static int cson_sqlite3_stmt_to_json_slim( sqlite3_stmt * st, cson_value ** tgt ) { #define RETURN(RC) { if(rootV) cson_value_free(rootV); return RC; } if( ! tgt || !st ) return cson_rc.ArgError; else { cson_value * rootV = NULL; cson_object * root = NULL; cson_value * aryV = NULL; cson_array * ary = NULL; cson_value * rowsV = NULL; cson_array * rows = NULL; int rc = 0; int const colCount = sqlite3_column_count(st); if( colCount <= 0 ) return cson_rc.ArgError; rootV = cson_value_new_object(); if( ! rootV ) return cson_rc.AllocError; aryV = cson_sqlite3_column_names(st); if( ! aryV ) { cson_value_free( rootV ); RETURN(cson_rc.AllocError); } root = cson_value_get_object(rootV); rc = cson_object_set( root, "columns", aryV ); if( rc ) { cson_value_free( aryV ); RETURN(rc); } aryV = NULL; ary = NULL; rowsV = cson_value_new_array(); if( ! rowsV ) RETURN(cson_rc.AllocError); rc = cson_object_set( root, "rows", rowsV ); if( 0 != rc ) { cson_value_free( rowsV ); RETURN(rc); } rows = cson_value_get_array(rowsV); assert(rows); while( SQLITE_ROW == sqlite3_step(st) ) { aryV = cson_sqlite3_row_to_array(st); if( ! aryV ) RETURN(cson_rc.UnknownError); rc = cson_array_append( rows, aryV ); if( 0 != rc ) { cson_value_free( aryV ); RETURN(rc); } } *tgt = rootV; return 0; } #undef RETURN } int cson_sqlite3_stmt_to_json( sqlite3_stmt * st, cson_value ** tgt, char fat ) { return fat ? cson_sqlite3_stmt_to_json_fat(st,tgt) : cson_sqlite3_stmt_to_json_slim(st,tgt) ; } int cson_sqlite3_sql_to_json( sqlite3 * db, cson_value ** tgt, char const * sql, char fat ) { if( !db || !tgt || !sql || !*sql ) return cson_rc.ArgError; else { sqlite3_stmt * st = NULL; int rc = sqlite3_prepare_v2( db, sql, -1, &st, NULL ); if( 0 != rc ) return cson_rc.IOError /* FIXME: Better error code? */; rc = cson_sqlite3_stmt_to_json( st, tgt, fat ); sqlite3_finalize( st ); return rc; } } #if defined(__cplusplus) } /*extern "C"*/ #endif #undef MARKER #endif /* CSON_ENABLE_SQLITE3 */ /* end file ./cson_sqlite3.c */ #endif /* FOSSIL_ENABLE_JSON */ |
Added src/cson_amalgamation.h.
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#ifdef FOSSIL_ENABLE_JSON /* auto-generated! Do not edit! */ /* begin file include/wh/cson/cson.h */ #if !defined(WANDERINGHORSE_NET_CSON_H_INCLUDED) #define WANDERINGHORSE_NET_CSON_H_INCLUDED 1 /*#include <stdint.h> C99: fixed-size int types. */ #include <stdio.h> /* FILE decl */ /** @page page_cson cson JSON API cson (pronounced "season") is an object-oriented C API for generating and consuming JSON (http://www.json.org) data. Its main claim to fame is that it can parse JSON from, and output it to, damned near anywhere. The i/o routines use a callback function to fetch/emit JSON data, allowing clients to easily plug in their own implementations. Implementations are provided for string- and FILE-based i/o. Project home page: http://fossil.wanderinghorse.net/repos/cson Author: Stephan Beal (http://www.wanderinghorse.net/home/stephan/) License: Dual Public Domain/MIT The full license text is at the bottom of the main header file (cson.h). Examples of how to use the library are scattered throughout the API documentation, in the test.c file in the source repo, and in the wiki on the project's home page. */ #if defined(__cplusplus) extern "C" { #endif #if defined(_WIN32) || defined(_WIN64) # define CSON_ENABLE_UNIX 0 #else # define CSON_ENABLE_UNIX 1 #endif /** @typedef some_long_int_type cson_int_t Typedef for JSON-like integer types. This is (long long) where feasible, otherwise (long). */ #if (__STDC_VERSION__ >= 199901L) || (HAVE_LONG_LONG == 1) typedef long long cson_int_t; #define CSON_INT_T_SFMT "lld" #define CSON_INT_T_PFMT "lld" #else typedef long cson_int_t; #define CSON_INT_T_SFMT "ld" #define CSON_INT_T_PFMT "ld" #endif /** @typedef double_or_long_double cson_double_t This is the type of double value used by the library. It is only lightly tested with long double, and when using long double the memory requirements for such values goes up. */ #if 0 typedef long double cson_double_t; #define CSON_DOUBLE_T_SFMT "Lf" #define CSON_DOUBLE_T_PFMT "Lf" #else typedef double cson_double_t; #define CSON_DOUBLE_T_SFMT "f" #define CSON_DOUBLE_T_PFMT "f" #endif /** @def CSON_INT_T_SFMT scanf()-compatible format token for cson_int_t. */ /** @def CSON_INT_T_PFMT printf()-compatible format token for cson_int_t. */ /** @def CSON_DOUBLE_T_SFMT scanf()-compatible format token for cson_double_t. */ /** @def CSON_DOUBLE_T_PFMT printf()-compatible format token for cson_double_t. */ typedef struct cson_value cson_value; /** @struct cson_value The core value type of this API. It is opaque to clients, and only the cson public API should be used for setting or inspecting their values. This class is opaque because stack-based usage can easily cause leaks if one does not intimately understand the underlying internal memory management (which sometimes changes). It is (as of 20110323) legal to insert a given value instance into multiple containers (they will share ownership using reference counting) as long as those insertions do not cause cycles. However, be very aware that such value re-use uses a reference to the original copy, meaning that if its value is changed once, it is changed everywhere. Also beware that multi-threaded write operations on such references leads to undefined behaviour. PLEASE read the ACHTUNGEN below... ACHTUNG #1: cson_values MUST NOT form cycles (e.g. via object or array entries). Not abiding th Holy Law Of No Cycles will lead to double-frees and the like (i.e. undefined behaviour, likely crashes due to infinite recursion or stepping on invalid (freed) pointers). ACHTUNG #2: ALL cson_values returned as non-const cson_value pointers from any public functions in the cson API are to be treated as if they are heap-allocated, and MUST be freed by client by doing ONE of: - Passing it to cson_value_free(). - Adding it to an Object or Array, in which case the object/array takes over ownership. As of 20110323, a value may be inserted into a single container multiple times, or into multiple containers, in which case they all share ownership (via reference counting) of the original value (meaning any changes to it are visible in all references to it). Each call to cson_value_new_xxx() MUST eventually be followed up by one of those options. Some cson_value_new_XXX() implementations do not actually allocate memory, but this is an internal implementation detail. Client code MUST NOT rely on this behaviour and MUST treat each object returned by such a function as if it was a freshly-allocated copy (even if their pointer addresses are the same). ACHTUNG #3: Note that ACHTUNG #2 tells us that we must always free (or transfer ownership of) all pointers returned bycson_value_new_xxx(), but that two calls to (e.g.) cson_value_new_bool(1) will (or might) return the same address. The client must not rely on the "non-allocation" policy of such special cases, and must pass each returned value to cson_value_free(), even if two of them have the same address. Some special values (e.g. null, true, false, integer 0, double 0.0, and empty strings) use shared copies and in other places reference counting is used internally to figure out when it is safe to destroy an object. @see cson_value_new_array() @see cson_value_new_object() @see cson_value_new_string() @see cson_value_new_integer() @see cson_value_new_double() @see cson_value_new_bool() @see cson_value_true() @see cson_value_false() @see cson_value_null() @see cson_value_free() */ /** @var cson_rc This object defines the error codes used by cson. Library routines which return int values almost always return a value from this structure. None of the members in this struct have published values except for the OK member, which has the value 0. All other values might be incidentally defined where clients can see them, but the numbers might change from release to release, so clients should only use the symbolic names. Client code is expected to access these values via the shared cson_rc object, and use them as demonstrated here: @code int rc = cson_some_func(...); if( 0 == rc ) {...success...} else if( cson_rc.ArgError == rc ) { ... some argument was wrong ... } else if( cson_rc.AllocError == rc ) { ... allocation error ... } ... @endcode The entries named Parse_XXX are generally only returned by cson_parse() and friends. */ /** @struct cson_rc_ See \ref cson_rc for details. */ static const struct cson_rc_ { /** The generic success value. Guaranteed to be 0. */ const int OK; /** Signifies an error in one or more arguments (e.g. NULL where it is not allowed). */ const int ArgError; /** Signifies that some argument is not in a valid range. */ const int RangeError; /** Signifies that some argument is not of the correct logical cson type. */ const int TypeError; /** Signifies an input/ouput error. */ const int IOError; /** Signifies an out-of-memory error. */ const int AllocError; /** Signifies that the called code is "NYI" (Not Yet Implemented). */ const int NYIError; /** Signifies that an internal error was triggered. If it happens, please report this as a bug! */ const int InternalError; /** Signifies that the called operation is not supported in the current environment. e.g. missing support from 3rd-party or platform-specific code. */ const int UnsupportedError; /** Signifies that the request resource could not be found. */ const int NotFoundError; /** Signifies an unknown error, possibly because an underlying 3rd-party API produced an error and we have no other reasonable error code to convert it to. */ const int UnknownError; /** Signifies that the parser found an unexpected character. */ const int Parse_INVALID_CHAR; /** Signifies that the parser found an invalid keyword (possibly an unquoted string). */ const int Parse_INVALID_KEYWORD; /** Signifies that the parser found an invalid escape sequence. */ const int Parse_INVALID_ESCAPE_SEQUENCE; /** Signifies that the parser found an invalid Unicode character sequence. */ const int Parse_INVALID_UNICODE_SEQUENCE; /** Signifies that the parser found an invalid numeric token. */ const int Parse_INVALID_NUMBER; /** Signifies that the parser reached its maximum defined parsing depth before finishing the input. */ const int Parse_NESTING_DEPTH_REACHED; /** Signifies that the parser found an unclosed object or array. */ const int Parse_UNBALANCED_COLLECTION; /** Signifies that the parser found an key in an unexpected place. */ const int Parse_EXPECTED_KEY; /** Signifies that the parser expected to find a colon but found none (e.g. between keys and values in an object). */ const int Parse_EXPECTED_COLON; } cson_rc = { 0/*OK*/, 1/*ArgError*/, 2/*RangeError*/, 3/*TypeError*/, 4/*IOError*/, 5/*AllocError*/, 6/*NYIError*/, 7/*InternalError*/, 8/*UnsupportedError*/, 9/*NotFoundError*/, 10/*UnknownError*/, 11/*Parse_INVALID_CHAR*/, 12/*Parse_INVALID_KEYWORD*/, 13/*Parse_INVALID_ESCAPE_SEQUENCE*/, 14/*Parse_INVALID_UNICODE_SEQUENCE*/, 15/*Parse_INVALID_NUMBER*/, 16/*Parse_NESTING_DEPTH_REACHED*/, 17/*Parse_UNBALANCED_COLLECTION*/, 18/*Parse_EXPECTED_KEY*/, 19/*Parse_EXPECTED_COLON*/ }; /** Returns the string form of the cson_rc code corresponding to rc, or some unspecified, non-NULL string if it is an unknown code. The returned bytes are static and do not changing during the lifetime of the application. */ char const * cson_rc_string(int rc); /** @struct cson_parse_opt Client-configurable options for the cson_parse() family of functions. */ struct cson_parse_opt { /** Maximum object/array depth to traverse. */ unsigned short maxDepth; /** Whether or not to allow C-style comments. Do not rely on this option being available. If the underlying parser is replaced, this option might no longer be supported. */ char allowComments; }; typedef struct cson_parse_opt cson_parse_opt; /** Empty-initialized cson_parse_opt object. */ #define cson_parse_opt_empty_m { 25/*maxDepth*/, 0/*allowComments*/} /** A class for holding JSON parser information. It is primarily intended for finding the position of a parse error. */ struct cson_parse_info { /** 1-based line number. */ unsigned int line; /** 0-based column number. */ unsigned int col; /** Length, in bytes. */ unsigned int length; /** Error code of the parse run (0 for no error). */ int errorCode; /** The total number of object keys successfully processed by the parser. */ unsigned int totalKeyCount; /** The total number of object/array values successfully processed by the parser, including the root node. */ unsigned int totalValueCount; }; typedef struct cson_parse_info cson_parse_info; /** Empty-initialized cson_parse_info object. */ #define cson_parse_info_empty_m {1/*line*/,\ 0/*col*/, \ 0/*length*/, \ 0/*errorCode*/, \ 0/*totalKeyCount*/, \ 0/*totalValueCount*/ \ } /** Empty-initialized cson_parse_info object. */ extern const cson_parse_info cson_parse_info_empty; /** Empty-initialized cson_parse_opt object. */ extern const cson_parse_opt cson_parse_opt_empty; /** Client-configurable options for the cson_output() family of functions. */ struct cson_output_opt { /** Specifies how to indent (or not) output. The values are: (0) == no extra indentation. (1) == 1 TAB character for each level. (>1) == that number of SPACES for each level. */ unsigned char indentation; /** Maximum object/array depth to traverse. Traversing deeply can be indicative of cycles in the object/array tree, and this value is used to figure out when to abort the traversal. */ unsigned short maxDepth; /** If true, a newline will be added to generated output, else not. */ char addNewline; /** If true, a space will be added after the colon operator in objects' key/value pairs. */ char addSpaceAfterColon; /** If set to 1 then objects/arrays containing only a single value will not indent an extra level for that value (but will indent on subsequent levels if that value contains multiple values). */ char indentSingleMemberValues; /** The JSON format allows, but does not require, JSON generators to backslash-escape forward slashes. This option enables/disables that feature. According to JSON's inventor, Douglas Crockford: <quote> It is allowed, not required. It is allowed so that JSON can be safely embedded in HTML, which can freak out when seeing strings containing "</". JSON tolerates "<\/" for this reason. </quote> (from an email on 2011-04-08) The default value is 0 (because it's just damned ugly). */ char escapeForwardSlashes; }; typedef struct cson_output_opt cson_output_opt; /** Empty-initialized cson_output_opt object. */ #define cson_output_opt_empty_m { 0/*indentation*/,\ 25/*maxDepth*/, \ 0/*addNewline*/, \ 0/*addSpaceAfterColon*/, \ 0/*indentSingleMemberValues*/, \ 0/*escapeForwardSlashes*/ \ } /** Empty-initialized cson_output_opt object. */ extern const cson_output_opt cson_output_opt_empty; /** Typedef for functions which act as an input source for the cson JSON parser. The arguments are: - state: implementation-specific state needed by the function. - n: when called, *n will be the number of bytes the function should read and copy to dest. The function MUST NOT copy more than *n bytes to dest. Before returning, *n must be set to the number of bytes actually copied to dest. If that number is smaller than the original *n value, the input is assumed to be completed (thus this is not useful with non-blocking readers). - dest: the destination memory to copy the data do. Must return 0 on success, non-0 on error (preferably a value from cson_rc). The parser allows this routine to return a partial character from a UTF multi-byte character. The input routine does not need to concern itself with character boundaries. */ typedef int (*cson_data_source_f)( void * state, void * dest, unsigned int * n ); /** Typedef for functions which act as an output destination for generated JSON. The arguments are: - state: implementation-specific state needed by the function. - n: the length, in bytes, of src. - src: the source bytes which the output function should consume. The src pointer will be invalidated shortly after this function returns, so the implementation must copy or ignore the data, but not hold a copy of the src pointer. Must return 0 on success, non-0 on error (preferably a value from cson_rc). These functions are called relatively often during the JSON-output process, and should try to be fast. */ typedef int (*cson_data_dest_f)( void * state, void const * src, unsigned int n ); /** Reads JSON-formatted string data (in ASCII, UTF8, or UTF16), using the src function to fetch all input. This function fetches each input character from the source function, which is calls like src(srcState, buffer, bufferSize), and processes them. If anything is not JSON-kosher then this function fails and returns one of the non-0 cson_rc codes. This function is only intended to read root nodes of a JSON tree, either a single object or a single array, containing any number of child elements. On success, *tgt is assigned the value of the root node of the JSON input, and the caller takes over ownership of that memory. On error, *tgt is not modified and the caller need not do any special cleanup, except possibly for the input source. The opt argument may point to an initialized cson_parse_opt object which contains any settings the caller wants. If it is NULL then default settings (the values defined in cson_parse_opt_empty) are used. The info argument may be NULL. If it is not NULL then the parser populates it with information which is useful in error reporting. Namely, it contains the line/column of parse errors. The srcState argument is ignored by this function but is passed on to src, so any output-destination-specific state can be stored there and accessed via the src callback. Non-parse error conditions include: - (!tgt) or !src: cson_rc.ArgError - cson_rc.AllocError can happen at any time during the input phase Here's a complete example of using a custom input source: @code // Internal type to hold state for a JSON input string. typedef struct { char const * str; // start of input string char const * pos; // current internal cursor position char const * end; // logical EOF (one-past-the-end) } StringSource; // cson_data_source_f() impl which uses StringSource. static int cson_data_source_StringSource( void * state, void * dest, unsigned int * n ) { StringSource * ss = (StringSource*) state; unsigned int i; unsigned char * tgt = (unsigned char *)dest; if( ! ss || ! n || !dest ) return cson_rc.ArgError; else if( !*n ) return cson_rc.RangeError; for( i = 0; (i < *n) && (ss->pos < ss->end); ++i, ++ss->pos, ++tgt ) { *tgt = *ss->pos; } *n = i; return 0; } ... // Now use StringSource together with cson_parse() StringSource ss; cson_value * root = NULL; char const * json = "{\"k1\":123}"; ss.str = ss.pos = json; ss.end = json + strlen(json); int rc = cson_parse( &root, cson_data_source_StringSource, &ss, NULL, NULL ); @endcode It is recommended that clients wrap such utility code into type-safe wrapper functions which also initialize the internal state object and check the user-provided parameters for legality before passing them on to cson_parse(). For examples of this, see cson_parse_FILE() or cson_parse_string(). TODOs: - Buffer the input in larger chunks. We currently read byte-by-byte, but i'm too tired to write/test the looping code for the buffering. @see cson_parse_FILE() @see cson_parse_string() */ int cson_parse( cson_value ** tgt, cson_data_source_f src, void * srcState, cson_parse_opt const * opt, cson_parse_info * info ); /** A cson_data_source_f() implementation which requires the state argument to be a readable (FILE*) handle. */ int cson_data_source_FILE( void * state, void * dest, unsigned int * n ); /** Equivalent to cson_parse( tgt, cson_data_source_FILE, src, opt ). @see cson_parse_filename() */ int cson_parse_FILE( cson_value ** tgt, FILE * src, cson_parse_opt const * opt, cson_parse_info * info ); /** Convenience wrapper around cson_parse_FILE() which opens the given filename. Returns cson_rc.IOError if the file cannot be opened. @see cson_parse_FILE() */ int cson_parse_filename( cson_value ** tgt, char const * src, cson_parse_opt const * opt, cson_parse_info * info ); /** Uses an internal helper class to pass src through cson_parse(). See that function for the return value and argument semantics. src must be a string containing JSON code, at least len bytes long, and the parser will attempt to parse exactly len bytes from src. If len is less than 2 (the minimum length of a legal top-node JSON object) then cson_rc.RangeError is returned. */ int cson_parse_string( cson_value ** tgt, char const * src, unsigned int len, cson_parse_opt const * opt, cson_parse_info * info ); /** Outputs the given value as a JSON-formatted string, sending all output to the given callback function. It is intended for top-level objects or arrays, but can be used with any cson_value. If opt is NULL then default options (the values defined in cson_output_opt_empty) are used. If opt->maxDepth is exceeded while traversing the value tree, cson_rc.RangeError is returned. The destState parameter is ignored by this function and is passed on to the dest function. Returns 0 on success. On error, any amount of output might have been generated before the error was triggered. Example: @code int rc = cson_output( myValue, cson_data_dest_FILE, stdout, NULL ); // basically equivalent to: cson_output_FILE( myValue, stdout, NULL ); // but note that cson_output_FILE() actually uses different defaults // for the output options. @endcode */ int cson_output( cson_value const * src, cson_data_dest_f dest, void * destState, cson_output_opt const * opt ); /** A cson_data_dest_f() implementation which requires the state argument to be a writable (FILE*) handle. */ int cson_data_dest_FILE( void * state, void const * src, unsigned int n ); /** Almost equivalent to cson_output( src, cson_data_dest_FILE, dest, opt ), with one minor difference: if opt is NULL then the default options always include the addNewline option, since that is normally desired for FILE output. @see cson_output_filename() */ int cson_output_FILE( cson_value const * src, FILE * dest, cson_output_opt const * opt ); /** Convenience wrapper around cson_output_FILE() which writes to the given filename, destroying any existing contents. Returns cson_rc.IOError if the file cannot be opened. @see cson_output_FILE() */ int cson_output_filename( cson_value const * src, char const * dest, cson_output_opt const * fmt ); /** Returns true if v is null, v->api is NULL, or v holds the special undefined value. */ char cson_value_is_undef( cson_value const * v ); /** Returns true if v contains a null value. */ char cson_value_is_null( cson_value const * v ); /** Returns true if v contains a bool value. */ char cson_value_is_bool( cson_value const * v ); /** Returns true if v contains an integer value. */ char cson_value_is_integer( cson_value const * v ); /** Returns true if v contains a double value. */ char cson_value_is_double( cson_value const * v ); /** Returns true if v contains a number (double, integer) value. */ char cson_value_is_number( cson_value const * v ); /** Returns true if v contains a string value. */ char cson_value_is_string( cson_value const * v ); /** Returns true if v contains an array value. */ char cson_value_is_array( cson_value const * v ); /** Returns true if v contains an object value. */ char cson_value_is_object( cson_value const * v ); /** @struct cson_object cson_object is an opaque handle to an Object value. They are used like: @code cson_object * obj = cson_value_get_object(myValue); ... @endcode They can be created like: @code cson_value * objV = cson_value_new_object(); cson_object * obj = cson_value_get_object(objV); // obj is owned by objV and objV must eventually be freed // using cson_value_free() or added to a container // object/array (which transfers ownership to that container). @endcode @see cson_value_new_object() @see cson_value_get_object() @see cson_value_free() */ typedef struct cson_object cson_object; /** @struct cson_array cson_array is an opaque handle to an Array value. They are used like: @code cson_array * obj = cson_value_get_array(myValue); ... @endcode They can be created like: @code cson_value * arV = cson_value_new_array(); cson_array * ar = cson_value_get_array(arV); // ar is owned by arV and arV must eventually be freed // using cson_value_free() or added to a container // object/array (which transfers ownership to that container). @endcode @see cson_value_new_array() @see cson_value_get_array() @see cson_value_free() */ typedef struct cson_array cson_array; /** @struct cson_string cson-internal string type, opaque to client code. Strings in cson are immutable and allocated only by library internals, never directly by client code. The actual string bytes are to be allocated together in the same memory chunk as the cson_string object, which saves us 1 malloc() and 1 pointer member in this type (because we no longer have a direct pointer to the memory). Potential TODOs: @see cson_string_cstr() */ typedef struct cson_string cson_string; /** Converts the given value to a boolean, using JavaScript semantics depending on the concrete type of val: undef or null: false boolean: same integer, double: 0 or 0.0 == false, else true object, array: true string: length-0 string is false, else true. Returns 0 on success and assigns *v (if v is not NULL) to either 0 or 1. On error (val is NULL) then v is not modified. */ int cson_value_fetch_bool( cson_value const * val, char * v ); /** Similar to cson_value_fetch_bool(), but fetches an integer value. The conversion, if any, depends on the concrete type of val: NULL, null, undefined: *v is set to 0 and 0 is returned. string, object, array: *v is set to 0 and cson_rc.TypeError is returned. The error may normally be safely ignored, but it is provided for those wanted to know whether a direct conversion was possible. integer: *v is set to the int value and 0 is returned. double: *v is set to the value truncated to int and 0 is returned. */ int cson_value_fetch_integer( cson_value const * val, cson_int_t * v ); /** The same conversions and return values as cson_value_fetch_integer(), except that the roles of int/double are swapped. */ int cson_value_fetch_double( cson_value const * val, cson_double_t * v ); /** If cson_value_is_string(val) then this function assigns *str to the contents of the string. str may be NULL, in which case this function functions like cson_value_is_string() but returns 0 on success. Returns 0 if val is-a string, else non-0, in which case *str is not modified. The bytes are owned by the given value and may be invalidated in any of the following ways: - The value is cleaned up or freed. - An array or object containing the value peforms a re-allocation (it shrinks or grows). And thus the bytes should be consumed before any further operations on val or any container which holds it. Note that this routine does not convert non-String values to their string representations. (Adding that ability would add more overhead to every cson_value instance.) */ int cson_value_fetch_string( cson_value const * val, cson_string ** str ); /** If cson_value_is_object(val) then this function assigns *obj to the underlying object value and returns 0, otherwise non-0 is returned and *obj is not modified. obj may be NULL, in which case this function works like cson_value_is_object() but with inverse return value semantics (0==success) (and it's a few CPU cycles slower). The *obj pointer is owned by val, and will be invalidated when val is cleaned up. Achtung: for best results, ALWAYS pass a pointer to NULL as the second argument, e.g.: @code cson_object * obj = NULL; int rc = cson_value_fetch_object( val, &obj ); // Or, more simply: obj = cson_value_get_object( val ); @endcode @see cson_value_get_object() */ int cson_value_fetch_object( cson_value const * val, cson_object ** obj ); /** Identical to cson_value_fetch_object(), but works on array values. @see cson_value_get_array() */ int cson_value_fetch_array( cson_value const * val, cson_array ** tgt ); /** Simplified form of cson_value_fetch_bool(). Returns 0 if val is NULL. */ char cson_value_get_bool( cson_value const * val ); /** Simplified form of cson_value_fetch_integer(). Returns 0 if val is NULL. */ cson_int_t cson_value_get_integer( cson_value const * val ); /** Simplified form of cson_value_fetch_double(). Returns 0.0 if val is NULL. */ cson_double_t cson_value_get_double( cson_value const * val ); /** Simplified form of cson_value_fetch_string(). Returns NULL if val is-not-a string value. */ cson_string * cson_value_get_string( cson_value const * val ); /** Returns a pointer to the NULL-terminated string bytes of str. The bytes are owned by string and will be invalided when it is cleaned up. If str is NULL then NULL is returned. @see cson_string_length_bytes() @see cson_value_get_string() */ char const * cson_string_cstr( cson_string const * str ); /** Convenience function which returns the string bytes of the given value if it is-a string, otherwise it returns NULL. Note that this does no conversion of non-string types to strings. Equivalent to cson_string_cstr(cson_value_get_string(val)). */ char const * cson_value_get_cstr( cson_value const * val ); /** Equivalent to cson_string_cmp_cstr_n(lhs, cson_string_cstr(rhs), cson_string_length_bytes(rhs)). */ int cson_string_cmp( cson_string const * lhs, cson_string const * rhs ); /** Compares lhs to rhs using memcmp()/strcmp() semantics. Generically speaking it returns a negative number if lhs is less-than rhs, 0 if they are equivalent, or a positive number if lhs is greater-than rhs. It has the following rules for equivalence: - The maximum number of bytes compared is the lesser of rhsLen and the length of lhs. If the strings do not match, but compare equal up to the just-described comparison length, the shorter string is considered to be less-than the longer one. - If lhs and rhs are both NULL, or both have a length of 0 then they will compare equal. - If lhs is null/length-0 but rhs is not then lhs is considered to be less-than rhs. - If rhs is null/length-0 but lhs is not then rhs is considered to be less-than rhs. - i have no clue if the results are exactly correct for UTF strings. */ int cson_string_cmp_cstr_n( cson_string const * lhs, char const * rhs, unsigned int rhsLen ); /** Equivalent to cson_string_cmp_cstr_n( lhs, rhs, (rhs&&*rhs)?strlen(rhs):0 ). */ int cson_string_cmp_cstr( cson_string const * lhs, char const * rhs ); /** Returns the length, in bytes, of str, or 0 if str is NULL. This is an O(1) operation. TODO: add cson_string_length_chars() (is O(N) unless we add another member to store the char length). @see cson_string_cstr() */ unsigned int cson_string_length_bytes( cson_string const * str ); /** Returns the number of UTF8 characters in str. This value will be at most as long as cson_string_length_bytes() for the same string, and less if it has multi-byte characters. Returns 0 if str is NULL. */ unsigned int cson_string_length_utf8( cson_string const * str ); /** Like cson_value_get_string(), but returns a copy of the underying string bytes, which the caller owns and must eventually free using free(). */ char * cson_value_get_string_copy( cson_value const * val ); /** Simplified form of cson_value_fetch_object(). Returns NULL if val is-not-a object value. */ cson_object * cson_value_get_object( cson_value const * val ); /** Simplified form of cson_value_fetch_array(). Returns NULL if val is-not-a array value. */ cson_array * cson_value_get_array( cson_value const * val ); /** Const-correct form of cson_value_get_array(). */ cson_array const * cson_value_get_array_c( cson_value const * val ); /** If ar is-a array and is at least (pos+1) entries long then *v (if v is not NULL) is assigned to the value at that position (which may be NULL). Ownership of the *v return value is unchanged by this call. (The containing array may share ownership of the value with other containers.) If pos is out of range, non-0 is returned and *v is not modified. If v is NULL then this function returns 0 if pos is in bounds, but does not otherwise return a value to the caller. */ int cson_array_value_fetch( cson_array const * ar, unsigned int pos, cson_value ** v ); /** Simplified form of cson_array_value_fetch() which returns NULL if ar is NULL, pos is out of bounds or if ar has no element at that position. */ cson_value * cson_array_get( cson_array const * ar, unsigned int pos ); /** Ensures that ar has allocated space for at least the given number of entries. This never shrinks the array and never changes its logical size, but may pre-allocate space in the array for storing new (as-yet-unassigned) values. Returns 0 on success, or non-zero on error: - If ar is NULL: cson_rc.ArgError - If allocation fails: cson_rc.AllocError */ int cson_array_reserve( cson_array * ar, unsigned int size ); /** If ar is not NULL, sets *v (if v is not NULL) to the length of the array and returns 0. Returns cson_rc.ArgError if ar is NULL. */ int cson_array_length_fetch( cson_array const * ar, unsigned int * v ); /** Simplified form of cson_array_length_fetch() which returns 0 if ar is NULL. */ unsigned int cson_array_length_get( cson_array const * ar ); /** Sets the given index of the given array to the given value. If ar already has an item at that index then it is cleaned up and freed before inserting the new item. ar is expanded, if needed, to be able to hold at least (ndx+1) items, and any new entries created by that expansion are empty (NULL values). On success, 0 is returned and ownership of v is transfered to ar. On error ownership of v is NOT modified, and the caller may still need to clean it up. For example, the following code will introduce a leak if this function fails: @code cson_array_append( myArray, cson_value_new_integer(42) ); @endcode Because the value created by cson_value_new_integer() has no owner and is not cleaned up. The "more correct" way to do this is: @code cson_value * v = cson_value_new_integer(42); int rc = cson_array_append( myArray, v ); if( 0 != rc ) { cson_value_free( v ); ... handle error ... } @endcode */ int cson_array_set( cson_array * ar, unsigned int ndx, cson_value * v ); /** Appends the given value to the given array, transfering ownership of v to ar. On error, ownership of v is not modified. Ownership of ar is never changed by this function. This is functionally equivalent to cson_array_set(ar,cson_array_length_get(ar),v), but this implementation has slightly different array-preallocation policy (it grows more eagerly). Returns 0 on success, non-zero on error. Error cases include: - ar or v are NULL: cson_rc.ArgError - Array cannot be expanded to hold enough elements: cson_rc.AllocError. - Appending would cause a numeric overlow in the array's size: cson_rc.RangeError. (However, you'll get an AllocError long before that happens!) On error ownership of v is NOT modified, and the caller may still need to clean it up. See cson_array_set() for the details. */ int cson_array_append( cson_array * ar, cson_value * v ); /** Creates a new cson_value from the given boolean value. Ownership of the new value is passed to the caller, who must eventually either free the value using cson_value_free() or inserting it into a container (array or object), which transfers ownership to the container. See the cson_value class documentation for more details. Returns NULL on allocation error. */ cson_value * cson_value_new_bool( char v ); /** Alias for cson_value_new_bool(v). */ cson_value * cson_new_bool(char v); /** Returns the special JSON "null" value. When outputing JSON, its string representation is "null" (without the quotes). See cson_value_new_bool() for notes regarding the returned value's memory. */ cson_value * cson_value_null(); /** Equivalent to cson_value_new_bool(1). */ cson_value * cson_value_true(); /** Equivalent to cson_value_new_bool(0). */ cson_value * cson_value_false(); /** Semantically the same as cson_value_new_bool(), but for integers. */ cson_value * cson_value_new_integer( cson_int_t v ); /** Alias for cson_value_new_integer(v). */ cson_value * cson_new_int(cson_int_t v); /** Semantically the same as cson_value_new_bool(), but for doubles. */ cson_value * cson_value_new_double( cson_double_t v ); /** Alias for cson_value_new_double(v). */ cson_value * cson_new_double(cson_double_t v); /** Semantically the same as cson_value_new_bool(), but for strings. This creates a JSON value which copies the first n bytes of str. The string will automatically be NUL-terminated. Note that if str is NULL or n is 0, this function still returns non-NULL value representing that empty string. Returns NULL on allocation error. See cson_value_new_bool() for important information about the returned memory. */ cson_value * cson_value_new_string( char const * str, unsigned int n ); /** Allocates a new "object" value and transfers ownership of it to the caller. It must eventually be destroyed, by the caller or its owning container, by passing it to cson_value_free(). Returns NULL on allocation error. Post-conditions: cson_value_is_object(value) will return true. @see cson_value_new_array() @see cson_value_free() */ cson_value * cson_value_new_object(); /** This works like cson_value_new_object() but returns an Object handle directly. The value handle for the returned object can be fetched with cson_object_value(theObject). Ownership is transfered to the caller, who must eventually free it by passing the Value handle (NOT the Object handle) to cson_value_free() or passing ownership to a parent container. Returns NULL on error (out of memory). */ cson_object * cson_new_object(); /** Identical to cson_new_object() except that it creates an Array. */ cson_array * cson_new_array(); /** Identical to cson_new_object() except that it creates a String. */ cson_string * cson_new_string(char const * val, unsigned int len); /** Equivalent to cson_value_free(cson_object_value(x)). */ void cson_free_object(cson_object *x); /** Equivalent to cson_value_free(cson_array_value(x)). */ void cson_free_array(cson_array *x); /** Equivalent to cson_value_free(cson_string_value(x)). */ void cson_free_string(cson_string const *x); /** Allocates a new "array" value and transfers ownership of it to the caller. It must eventually be destroyed, by the caller or its owning container, by passing it to cson_value_free(). Returns NULL on allocation error. Post-conditions: cson_value_is_array(value) will return true. @see cson_value_new_object() @see cson_value_free() */ cson_value * cson_value_new_array(); /** Frees any resources owned by v, then frees v. If v is a container type (object or array) its children are also freed (recursively). If v is NULL, this is a no-op. This function decrements a reference count and only destroys the value if its reference count drops to 0. Reference counts are increased by either inserting the value into a container or via cson_value_add_reference(). Even if this function does not immediately destroy the value, the value must be considered, from the perspective of that client code, to have been destroyed/invalidated by this call. @see cson_value_new_object() @see cson_value_new_array() @see cson_value_add_reference() */ void cson_value_free(cson_value * v); /** Alias for cson_value_free(). */ void cson_free_value(cson_value * v); /** Functionally similar to cson_array_set(), but uses a string key as an index. Like arrays, if a value already exists for the given key, it is destroyed by this function before inserting the new value. If v is NULL then this call is equivalent to cson_object_unset(obj,key). Note that (v==NULL) is treated differently from v having the special null value. In the latter case, the key is set to the special null value. The key may be encoded as ASCII or UTF8. Results are undefined with other encodings, and the errors won't show up here, but may show up later, e.g. during output. Returns 0 on success, non-0 on error. It has the following error cases: - cson_rc.ArgError: obj or key are NULL or strlen(key) is 0. - cson_rc.AllocError: an out-of-memory error On error ownership of v is NOT modified, and the caller may still need to clean it up. For example, the following code will introduce a leak if this function fails: @code cson_object_set( myObj, "foo", cson_value_new_integer(42) ); @endcode Because the value created by cson_value_new_integer() has no owner and is not cleaned up. The "more correct" way to do this is: @code cson_value * v = cson_value_new_integer(42); int rc = cson_object_set( myObj, "foo", v ); if( 0 != rc ) { cson_value_free( v ); ... handle error ... } @endcode Potential TODOs: - Add an overload which takes a cson_value key instead. To get any value out of that we first need to be able to convert arbitrary value types to strings. We could simply to-JSON them and use those as keys. */ int cson_object_set( cson_object * obj, char const * key, cson_value * v ); /** Functionaly equivalent to cson_object_set(), but takes a cson_string() as its KEY type. The string will be reference-counted like any other values, and the key may legally be used within this same container (as a value) or others (as a key or value) at the same time. Returns 0 on success. On error, ownership (i.e. refcounts) of key and value are not modified. On success key and value will get increased refcounts unless they are replacing themselves (which is a harmless no-op). */ int cson_object_set_s( cson_object * obj, cson_string * key, cson_value * v ); /** Removes a property from an object. If obj contains the given key, it is removed and 0 is returned. If it is not found, cson_rc.NotFoundError is returned (which can normally be ignored by client code). cson_rc.ArgError is returned if obj or key are NULL or key has a length of 0. Returns 0 if the given key is found and removed. This is functionally equivalent calling cson_object_set(obj,key,NULL). */ int cson_object_unset( cson_object * obj, char const * key ); /** Searches the given object for a property with the given key. If found, it is returned. If no match is found, or any arguments are NULL, NULL is returned. The returned object is owned by obj, and may be invalidated by ANY operations which change obj's property list (i.e. add or remove properties). FIXME: allocate the key/value pairs like we do for cson_array, to get improve the lifetimes of fetched values. @see cson_object_fetch_sub() @see cson_object_get_sub() */ cson_value * cson_object_get( cson_object const * obj, char const * key ); /** Equivalent to cson_object_get() but takes a cson_string argument instead of a C-style string. */ cson_value * cson_object_get_s( cson_object const * obj, cson_string const *key ); /** Similar to cson_object_get(), but removes the value from the parent object's ownership. If no item is found then NULL is returned, else the object (now owned by the caller or possibly shared with other containers) is returned. Returns NULL if either obj or key are NULL or key has a length of 0. This function reduces the returned value's reference count but has the specific property that it does not treat refcounts 0 and 1 identically, meaning that the returned object may have a refcount of 0. This behaviour works around a corner-case where we want to extract a child element from its parent and then destroy the parent (which leaves us in an undesireable (normally) reference count state). */ cson_value * cson_object_take( cson_object * obj, char const * key ); /** Fetches a property from a child (or [great-]*grand-child) object. obj is the object to search. path is a delimited string, where the delimiter is the given separator character. This function searches for the given path, starting at the given object and traversing its properties as the path specifies. If a given part of the path is not found, then this function fails with cson_rc.NotFoundError. If it finds the given path, it returns the value by assiging *tgt to it. If tgt is NULL then this function has no side-effects but will return 0 if the given path is found within the object, so it can be used to test for existence without fetching it. Returns 0 if it finds an entry, cson_rc.NotFoundError if it finds no item, and any other non-zero error code on a "real" error. Errors include: - obj or path are NULL: cson_rc.ArgError - separator is 0, or path is an empty string or contains only separator characters: cson_rc.RangeError - There is an upper limit on how long a single path component may be (some "reasonable" internal size), and cson_rc.RangeError is returned if that length is violated. Limitations: - It has no way to fetch data from arrays this way. i could imagine, e.g., a path of "subobj.subArray.0" for subobj.subArray[0], or "0.3.1" for [0][3][1]. But i'm too lazy/tired to add this. Example usage: Assume we have a JSON structure which abstractly looks like: @code {"subobj":{"subsubobj":{"myValue":[1,2,3]}}} @endcode Out goal is to get the value of myValue. We can do that with: @code cson_value * v = NULL; int rc = cson_object_fetch_sub( object, &v, "subobj.subsubobj.myValue", '.' ); @endcode Note that because keys in JSON may legally contain a '.', the separator must be specified by the caller. e.g. the path "subobj/subsubobj/myValue" with separator='/' is equivalent the path "subobj.subsubobj.myValue" with separator='.'. The value of 0 is not legal as a separator character because we cannot distinguish that use from the real end-of-string without requiring the caller to also pass in the length of the string. Multiple successive separators in the list are collapsed into a single separator for parsing purposes. e.g. the path "a...b...c" (separator='.') is equivalent to "a.b.c". @see cson_object_get_sub() @see cson_object_get_sub2() */ int cson_object_fetch_sub( cson_object const * obj, cson_value ** tgt, char const * path, char separator ); /** Similar to cson_object_fetch_sub(), but derives the path separator character from the first byte of the path argument. e.g. the following arg equivalent: @code cson_object_fetch_sub( obj, &tgt, "foo.bar.baz", '.' ); cson_object_fetch_sub2( obj, &tgt, ".foo.bar.baz" ); @endcode */ int cson_object_fetch_sub2( cson_object const * obj, cson_value ** tgt, char const * path ); /** Convenience form of cson_object_fetch_sub() which returns NULL if the given item is not found. */ cson_value * cson_object_get_sub( cson_object const * obj, char const * path, char sep ); /** Convenience form of cson_object_fetch_sub2() which returns NULL if the given item is not found. */ cson_value * cson_object_get_sub2( cson_object const * obj, char const * path ); /** @enum CSON_MERGE_FLAGS Flags for cson_object_merge(). */ enum CSON_MERGE_FLAGS { CSON_MERGE_DEFAULT = 0, CSON_MERGE_REPLACE = 0x01, CSON_MERGE_NO_RECURSE = 0x02 }; /** "Merges" the src object's properties into dest. Each property in src is copied (using reference counting, not cloning) into dest. If dest already has the given property then behaviour depends on the flags argument: If flag has the CSON_MERGE_REPLACE bit set then this function will by default replace non-object properties with the src property. If src and dest both have the property AND it is an Object then this function operates recursively on those objects. If CSON_MERGE_NO_RECURSE is set then objects are not recursed in this manner, and will be completely replaced if CSON_MERGE_REPLACE is set. Array properties in dest are NOT recursed for merging - they are either replaced or left as-is, depending on whether flags contains he CSON_MERGE_REPLACE bit. Returns 0 on success. The error conditions are: - dest or src are NULL or (dest==src) returns cson_rc.ArgError. - dest or src contain cyclic references - this will likely cause a crash due to endless recursion. Potential TODOs: - Add a flag to copy clones, not the original values. */ int cson_object_merge( cson_object * dest, cson_object const * src, int flags ); /** An iterator type for traversing object properties. Its values must be considered private, not to be touched by client code. @see cson_object_iter_init() @see cson_object_iter_next() */ struct cson_object_iterator { /** @internal The underlying object. */ cson_object const * obj; /** @internal Current position in the property list. */ unsigned int pos; }; typedef struct cson_object_iterator cson_object_iterator; /** Empty-initialized cson_object_iterator object. */ #define cson_object_iterator_empty_m {NULL/*obj*/,0/*pos*/} /** Empty-initialized cson_object_iterator object. */ extern const cson_object_iterator cson_object_iterator_empty; /** Initializes the given iterator to point at the start of obj's properties. Returns 0 on success or cson_rc.ArgError if !obj or !iter. obj must outlive iter, or results are undefined. Results are also undefined if obj is modified while the iterator is active. @see cson_object_iter_next() */ int cson_object_iter_init( cson_object const * obj, cson_object_iterator * iter ); /** @struct cson_kvp This class represents a key/value pair and is used for storing object properties. It is opaque to client code, and the public API only uses this type for purposes of iterating over cson_object properties using the cson_object_iterator interfaces. */ typedef struct cson_kvp cson_kvp; /** Returns the next property from the given iterator's object, or NULL if the end of the property list as been reached. Note that the order of object properties is undefined by the API, and may change from version to version. The returned memory belongs to the underlying object and may be invalidated by any changes to that object. Example usage: @code cson_object_iterator it; cson_object_iter_init( myObject, &it ); // only fails if either arg is 0 cson_kvp * kvp; cson_string const * key; cson_value const * val; while( (kvp = cson_object_iter_next(&it) ) ) { key = cson_kvp_key(kvp); val = cson_kvp_value(kvp); ... } @endcode There is no need to clean up an iterator, as it holds no dynamic resources. @see cson_kvp_key() @see cson_kvp_value() */ cson_kvp * cson_object_iter_next( cson_object_iterator * iter ); /** Returns the key associated with the given key/value pair, or NULL if !kvp. The memory is owned by the object which contains the key/value pair, and may be invalidated by any modifications to that object. */ cson_string * cson_kvp_key( cson_kvp const * kvp ); /** Returns the value associated with the given key/value pair, or NULL if !kvp. The memory is owned by the object which contains the key/value pair, and may be invalidated by any modifications to that object. */ cson_value * cson_kvp_value( cson_kvp const * kvp ); /** @typedef some unsigned int type cson_size_t */ typedef unsigned int cson_size_t; /** A generic buffer class. They can be used like this: @code cson_buffer b = cson_buffer_empty; int rc = cson_buffer_reserve( &buf, 100 ); if( 0 != rc ) { ... allocation error ... } ... use buf.mem ... ... then free it up ... cson_buffer_reserve( &buf, 0 ); @endcode To take over ownership of a buffer's memory: @code void * mem = b.mem; // mem is b.capacity bytes long, but only b.used // bytes of it has been "used" by the API. b = cson_buffer_empty; @endcode The memory now belongs to the caller and must eventually be free()d. */ struct cson_buffer { /** The number of bytes allocated for this object. Use cson_buffer_reserve() to change its value. */ cson_size_t capacity; /** The number of bytes "used" by this object. It is not needed for all use cases, and management of this value (if needed) is up to the client. The cson_buffer public API does not use this member. The intention is that this can be used to track the length of strings which are allocated via cson_buffer, since they need an explicit length and/or null terminator. */ cson_size_t used; /** This is a debugging/metric-counting value intended to help certain malloc()-conscious clients tweak their memory reservation sizes. Each time cson_buffer_reserve() expands the buffer, it increments this value by 1. */ cson_size_t timesExpanded; /** The memory allocated for and owned by this buffer. Use cson_buffer_reserve() to change its size or free it. To take over ownership, do: @code void * myptr = buf.mem; buf = cson_buffer_empty; @endcode (You might also need to store buf.used and buf.capacity, depending on what you want to do with the memory.) When doing so, the memory must eventually be passed to free() to deallocate it. */ unsigned char * mem; }; /** Convenience typedef. */ typedef struct cson_buffer cson_buffer; /** An empty-initialized cson_buffer object. */ #define cson_buffer_empty_m {0/*capacity*/,0/*used*/,0/*timesExpanded*/,NULL/*mem*/} /** An empty-initialized cson_buffer object. */ extern const cson_buffer cson_buffer_empty; /** Uses cson_output() to append all JSON output to the given buffer object. The semantics for the (v, opt) parameters, and the return value, are as documented for cson_output(). buf must be a non-NULL pointer to a properly initialized buffer (see example below). Ownership of buf is not changed by calling this. On success 0 is returned and the contents of buf.mem are guaranteed to be NULL-terminated. On error the buffer might contain partial contents, and it should not be used except to free its contents. On error non-zero is returned. Errors include: - Invalid arguments: cson_rc.ArgError - Buffer cannot be expanded (runs out of memory): cson_rc.AllocError Example usage: @code cson_buffer buf = cson_buffer_empty; // optional: cson_buffer_reserve(&buf, 1024 * 10); int rc = cson_output_buffer( myValue, &buf, NULL ); if( 0 != rc ) { ... error! ... } else { ... use buffer ... puts((char const*)buf.mem); } // In both cases, we eventually need to clean up the buffer: cson_buffer_reserve( &buf, 0 ); // Or take over ownership of its memory: { char * mem = (char *)buf.mem; buf = cson_buffer_empty; ... free(mem); } @endcode @see cson_output() */ int cson_output_buffer( cson_value const * v, cson_buffer * buf, cson_output_opt const * opt ); /** This works identically to cson_parse_string(), but takes a cson_buffer object as its input. buf->used bytes of buf->mem are assumed to be valid JSON input, but it need not be NUL-terminated (we only read up to buf->used bytes). The value of buf->used is assumed to be the "string length" of buf->mem, i.e. not including the NUL terminator. Returns 0 on success, non-0 on error. See cson_parse() for the semantics of the tgt, opt, and err parameters. */ int cson_parse_buffer( cson_value ** tgt, cson_buffer const * buf, cson_parse_opt const * opt, cson_parse_info * err ); /** Reserves the given amount of memory for the given buffer object. If n is 0 then buf->mem is freed and its state is set to NULL/0 values. If buf->capacity is less than or equal to n then 0 is returned and buf is not modified. If n is larger than buf->capacity then buf->mem is (re)allocated and buf->capacity contains the new length. Newly-allocated bytes are filled with zeroes. On success 0 is returned. On error non-0 is returned and buf is not modified. buf->mem is owned by buf and must eventually be freed by passing an n value of 0 to this function. buf->used is never modified by this function. */ int cson_buffer_reserve( cson_buffer * buf, cson_size_t n ); /** Fills all bytes of the given buffer with the given character. Returns the number of bytes set (buf->capacity), or 0 if !buf or buf has no memory allocated to it. */ cson_size_t cson_buffer_fill( cson_buffer * buf, char c ); /** Uses a cson_data_source_f() function to buffer input into a cson_buffer. dest must be a non-NULL, initialized (though possibly empty) cson_buffer object. Its contents, if any, will be overwritten by this function, and any memory it holds might be re-used. The src function is called, and passed the state parameter, to fetch the input. If it returns non-0, this function returns that error code. src() is called, possibly repeatedly, until it reports that there is no more data. Whether or not this function succeeds, dest still owns any memory pointed to by dest->mem, and the client must eventually free it by calling cson_buffer_reserve(dest,0). dest->mem might (and possibly will) be (re)allocated by this function, so any pointers to it held from before this call might be invalidated by this call. On error non-0 is returned and dest has almost certainly been modified but its state must be considered incomplete. Errors include: - dest or src are NULL (cson_rc.ArgError) - Allocation error (cson_rc.AllocError) - src() returns an error code Whether or not the state parameter may be NULL depends on the src implementation requirements. On success dest will contain the contents read from the input source. dest->used will be the length of the read-in data, and dest->mem will point to the memory. dest->mem is automatically NUL-terminated if this function succeeds, but dest->used does not count that terminator. On error the state of dest->mem must be considered incomplete, and is not guaranteed to be NUL-terminated. Example usage: @code cson_buffer buf = cson_buffer_empty; int rc = cson_buffer_fill_from( &buf, cson_data_source_FILE, stdin ); if( rc ) { fprintf(stderr,"Error %d (%s) while filling buffer.\n", rc, cson_rc_string(rc)); cson_buffer_reserve( &buf, 0 ); return ...; } ... use the buf->mem ... ... clean up the buffer ... cson_buffer_reserve( &buf, 0 ); @endcode To take over ownership of the buffer's memory, do: @code void * mem = buf.mem; buf = cson_buffer_empty; @endcode In which case the memory must eventually be passed to free() to free it. */ int cson_buffer_fill_from( cson_buffer * dest, cson_data_source_f src, void * state ); /** Increments the reference count for the given value. This is a low-level operation and should not normally be used by client code without understanding exactly what side-effects it introduces. Mis-use can lead to premature destruction or cause a value instance to never be properly destructed (i.e. a memory leak). This function is probably only useful for the following cases: - You want to hold a reference to a value which is itself contained in one or more containers, and you need to be sure that your reference outlives the container(s) and/or that you can free your copy of the reference without invaliding any references to the same value held in containers. - You want to implement "value sharing" behaviour without using an object or array to contain the shared value. This can be used to ensure the lifetime of the shared value instance. Each sharing point adds a reference and simply passed the value to cson_value_free() when they're done. The object will be kept alive for other sharing points which added a reference. Normally any such value handles would be invalidated when the parent container(s) is/are cleaned up, but this function can be used to effectively delay the cleanup. This function, at its lowest level, increments the value's reference count by 1. To decrement the reference count, pass the value to cson_value_free(), after which the value must be considered, from the perspective of that client code, to be destroyed (though it will not be if there are still other live references to it). cson_value_free() will not _actually_ destroy the value until its reference count drops to 0. Returns 0 on success. The only error conditions are if v is NULL (cson_rc.ArgError) or if the reference increment would overflow (cson_rc.RangeError). In theory a client would get allocation errors long before the reference count could overflow (assuming those reference counts come from container insertions, as opposed to via this function). Insider notes which clients really need to know: For shared/constant value instances, such as those returned by cson_value_true() and cson_value_null(), this function has no side effects - it does not actually modify the reference count because (A) those instances are shared across all client code and (B) those objects are static and never get cleaned up. However, that is an implementation detail which client code should not rely on. In other words, if you call cson_value_add_reference() 3 times using the value returned by cson_value_true() (which is incidentally a shared cson_value instance), you must eventually call cson_value_free() 3 times to (semantically) remove those references. However, internally the reference count for that specific cson_value instance will not be modified and those objects will never be freed (they're stack-allocated). It might be interesting to note that newly-created objects have a reference count of 0 instead of 1. This is partly because if the initial reference is counted then it makes ownership problematic when inserting values into containers. e.g. consider the following code: @code // ACHTUNG: this code is hypothetical and does not reflect // what actually happens! cson_value * v = cson_value_new_integer( 42 ); // v's refcount = 1 cson_array_append( myArray, v ); // v's refcount = 2 @endcode If that were the case, the client would be forced to free his own reference after inserting it into the container (which is a bit counter-intuitive as well as intrusive). It would look a bit like the following and would have to be done after every create/insert operation: @code // ACHTUNG: this code is hypothetical and does not reflect // what actually happens! cson_array_append( myArray, v ); // v's refcount = 2 cson_value_free( v ); // v's refcount = 1 @endcode (As i said: it's counter-intuitive and intrusive.) Instead, values start with a refcount of 0 and it is only increased when the value is added to an object/array container or when this function is used to manually increment it. cson_value_free() treats a refcount of 0 or 1 equivalently, destroying the value instance. The only semantic difference between 0 and 1, for purposes of cleaning up, is that a value with a non-0 refcount has been had its refcount adjusted, whereas a 0 refcount indicates a fresh, "unowned" reference. */ int cson_value_add_reference( cson_value * v ); #if 0 /** DO NOT use this unless you know EXACTLY what you're doing. It is only in the public API to work around a couple corner cases involving extracting child elements and discarding their parents. This function sets v's reference count to the given value. It does not clean up the object if rc is 0. Returns 0 on success, non-0 on error. */ int cson_value_refcount_set( cson_value * v, unsigned short rc ); #endif /** Deeply copies a JSON value, be it an object/array or a "plain" value (e.g. number/string/boolean). If cv is not NULL then this function makes a deep clone of it and returns that clone. Ownership of the clone is transfered to the caller, who must eventually free the value using cson_value_free() or add it to a container object/array to transfer ownership to the container. The returned object will be of the same logical type as orig. ACHTUNG: if orig contains any cyclic references at any depth level this function will endlessly recurse. (Having _any_ cyclic references violates this library's requirements.) Returns NULL if orig is NULL or if cloning fails. Assuming that orig is in a valid state, the only "likely" error case is that an allocation fails while constructing the clone. In other words, if cloning fails due to something other than an allocation error then either orig is in an invalid state or there is a bug. */ cson_value * cson_value_clone( cson_value const * orig ); /** Returns the value handle associated with s. The handle itself owns s, and ownership of the handle is not changed by calling this function. If the returned handle is part of a container, calling cson_value_free() on the returned handle invoked undefined behaviour (quite possibly downstream when the container tries to use it). This function only returns NULL if s. is NULL. */ cson_value * cson_string_value(cson_string const * s); /** The Object form of cson_string_value(). See that function for full details. */ cson_value * cson_object_value(cson_object const * s); /** The Array form of cson_string_value(). See that function for full details. */ cson_value * cson_array_value(cson_array const * s); /** Calculates the in-memory-allocated size of v, recursively if it is a container type, with the following caveats and limitations: If a given value is reference counted and multiple times within a traversed container, each reference is counted at full cost. We have no what of knowing if a given reference has been visited already and whether it should or should not be counted, so we pessimistically count them even though the _might_ not really count for the given object tree (it depends on where the other open references live). This function returns 0 if any of the following are true: - v is NULL - v is one of the special singleton values (null, bools, empty string, int 0, double 0.0) All other values require an allocation, and this will return their total memory cost, including the cson-specific internals and the native value(s). Note that because arrays and objects might have more internal slots allocated than used, the alloced size of a container does not necessarily increase when a new item is inserted into it. An interesting side-effect of this is that when cson_clone()ing an array or object, the size of the clone can actually be less than the original. */ unsigned int cson_value_msize(cson_value const * v); /* LICENSE This software's source code, including accompanying documentation and demonstration applications, are licensed under the following conditions... Certain files are imported from external projects and have their own licensing terms. Namely, the JSON_parser.* files. See their files for their official licenses, but the summary is "do what you want [with them] but leave the license text and copyright in place." The author (Stephan G. Beal [http://wanderinghorse.net/home/stephan/]) explicitly disclaims copyright in all jurisdictions which recognize such a disclaimer. In such jurisdictions, this software is released into the Public Domain. In jurisdictions which do not recognize Public Domain property (e.g. Germany as of 2011), this software is Copyright (c) 2011 by Stephan G. Beal, and is released under the terms of the MIT License (see below). In jurisdictions which recognize Public Domain property, the user of this software may choose to accept it either as 1) Public Domain, 2) under the conditions of the MIT License (see below), or 3) under the terms of dual Public Domain/MIT License conditions described here, as they choose. The MIT License is about as close to Public Domain as a license can get, and is described in clear, concise terms at: http://en.wikipedia.org/wiki/MIT_License The full text of the MIT License follows: -- Copyright (c) 2011 Stephan G. Beal (http://wanderinghorse.net/home/stephan/) Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. --END OF MIT LICENSE-- For purposes of the above license, the term "Software" includes documentation and demonstration source code which accompanies this software. ("Accompanies" = is contained in the Software's primary public source code repository.) */ #if defined(__cplusplus) } /*extern "C"*/ #endif #endif /* WANDERINGHORSE_NET_CSON_H_INCLUDED */ /* end file include/wh/cson/cson.h */ /* begin file include/wh/cson/cson_sqlite3.h */ /** @file cson_sqlite3.h This file contains cson's public sqlite3-to-JSON API declarations and API documentation. If CSON_ENABLE_SQLITE3 is not defined, or is defined to 0, then including this file will have no side-effects other than defining CSON_ENABLE_SQLITE3 (if it was not defined) to 0 and defining a few include guard macros. i.e. if CSON_ENABLE_SQLITE3 is not set to a true value then the API is not visible. This API requires that <sqlite3.h> be in the INCLUDES path and that the client eventually link to (or directly embed) the sqlite3 library. */ #if !defined(WANDERINGHORSE_NET_CSON_SQLITE3_H_INCLUDED) #define WANDERINGHORSE_NET_CSON_SQLITE3_H_INCLUDED 1 #if !defined(CSON_ENABLE_SQLITE3) # if defined(DOXYGEN) #define CSON_ENABLE_SQLITE3 1 # else #define CSON_ENABLE_SQLITE3 1 # endif #endif #if CSON_ENABLE_SQLITE3 /* we do this here for the sake of the amalgamation build */ #include <sqlite3.h> #if defined(__cplusplus) extern "C" { #endif /** Converts a single value from a single 0-based column index to its JSON equivalent. On success it returns a new JSON value, which will have a different concrete type depending on the field type reported by sqlite3_column_type(st,col): Integer, double, null, or string (TEXT and BLOB data, though not all blob data is legal for a JSON string). st must be a sqlite3_step()'d row and col must be a 0-based column index within that result row. */ cson_value * cson_sqlite3_column_to_value( sqlite3_stmt * st, int col ); /** Creates a JSON Array object containing the names of all columns of the given prepared statement handle. Returns a new array value on success, which the caller owns. Its elements are in the same order as in the underlying query. On error NULL is returned. st is not traversed or freed by this function - only the column count and names are read. */ cson_value * cson_sqlite3_column_names( sqlite3_stmt * st ); /** Creates a JSON Object containing key/value pairs corresponding to the result columns in the current row of the given statement handle. st must be a sqlite3_step()'d row result. On success a new Object is returned which is owned by the caller. On error NULL is returned. cson_sqlite3_column_to_value() is used to convert each column to a JSON value, and the column names are taken from sqlite3_column_name(). */ cson_value * cson_sqlite3_row_to_object( sqlite3_stmt * st ); /** Functionally almost identical to cson_sqlite3_row_to_object(), the only difference being how the result objects gets its column names. st must be a freshly-step()'d handle holding a result row. colNames must be an Array with at least the same number of columns as st. If it has fewer, NULL is returned and this function has no side-effects. For each column in the result set, the colNames entry at the same index is used for the column key. If a given entry is-not-a String then conversion will fail and NULL will be returned. The one reason to prefer this over cson_sqlite3_row_to_object() is that this one can share the keys across multiple rows (or even other JSON containers), whereas the former makes fresh copies of the column names for each row. */ cson_value * cson_sqlite3_row_to_object2( sqlite3_stmt * st, cson_array * colNames ); /** Similar to cson_sqlite3_row_to_object(), but creates an Array value which contains the JSON-form values of the given result set row. */ cson_value * cson_sqlite3_row_to_array( sqlite3_stmt * st ); /** Converts the results of an sqlite3 SELECT statement to JSON, in the form of a cson_value object tree. st must be a prepared, but not yet traversed, SELECT query. tgt must be a pointer to NULL (see the example below). If either of those arguments are NULL, cson_rc.ArgError is returned. This walks the query results and returns a JSON object which has a different structure depending on the value of the 'fat' argument. If 'fat' is 0 then the structure is: @code { "columns":["colName1",..."colNameN"], "rows":[ [colVal0, ... colValN], [colVal0, ... colValN], ... ] } @endcode In the "non-fat" format the order of the columns and row values is guaranteed to be the same as that of the underlying query. If 'fat' is not 0 then the structure is: @code { "columns":["colName1",..."colNameN"], "rows":[ {"colName1":value1,..."colNameN":valueN}, {"colName1":value1,..."colNameN":valueN}, ... ] } @endcode In the "fat" format, the order of the "columns" entries is guaranteed to be the same as the underlying query fields, but the order of the keys in the "rows" might be different and might in fact change when passed through different JSON implementations, depending on how they implement object key/value pairs. On success it returns 0 and assigns *tgt to a newly-allocated JSON object tree (using the above structure), which the caller owns. If the query returns no rows, the "rows" value will be an empty array, as opposed to null. On error non-0 is returned and *tgt is not modified. The error code cson_rc.IOError is used to indicate a db-level error, and cson_rc.TypeError is returned if sqlite3_column_count(st) returns 0 or less (indicating an invalid or non-SELECT statement). The JSON data types are determined by the column type as reported by sqlite3_column_type(): SQLITE_INTEGER: integer SQLITE_FLOAT: double SQLITE_TEXT or SQLITE_BLOB: string, and this will only work if the data is UTF8 compatible. If the db returns a literal or SQL NULL for a value it is converted to a JSON null. If it somehow finds a column type it cannot handle, the value is also converted to a NULL in the output. Example @code cson_value * json = NULL; int rc = cson_sqlite3_stmt_to_json( myStatement, &json, 1 ); if( 0 != rc ) { ... error ... } else { cson_output_FILE( json, stdout, NULL ); cson_value_free( json ); } @endcode */ int cson_sqlite3_stmt_to_json( sqlite3_stmt * st, cson_value ** tgt, char fat ); /** A convenience wrapper around cson_sqlite3_stmt_to_json(), which takes SQL instead of a sqlite3_stmt object. It has the same return value and argument semantics as that function. */ int cson_sqlite3_sql_to_json( sqlite3 * db, cson_value ** tgt, char const * sql, char fat ); #if defined(__cplusplus) } /*extern "C"*/ #endif #endif /* CSON_ENABLE_SQLITE3 */ #endif /* WANDERINGHORSE_NET_CSON_SQLITE3_H_INCLUDED */ /* end file include/wh/cson/cson_sqlite3.h */ #endif /* FOSSIL_ENABLE_JSON */ |
Changes to src/db.c.
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*/ struct Stmt { Blob sql; /* The SQL for this statement */ sqlite3_stmt *pStmt; /* The results of sqlite3_prepare() */ Stmt *pNext, *pPrev; /* List of all unfinalized statements */ int nStep; /* Number of sqlite3_step() calls */ }; #endif /* INTERFACE */ /* ** Call this routine when a database error occurs. */ static void db_err(const char *zFormat, ...){ va_list ap; char *z; static const char zRebuildMsg[] = "If you have recently updated your fossil executable, you might\n" "need to run \"fossil all rebuild\" to bring the repository\n" "schemas up to date.\n"; va_start(ap, zFormat); z = vmprintf(zFormat, ap); va_end(ap); if( g.xferPanic ){ cgi_reset_content(); @ error Database\serror:\s%F(z) cgi_reply(); } if( g.cgiOutput ){ g.cgiOutput = 0; cgi_printf("<h1>Database Error</h1>\n" "<pre>%h</pre><p>%s</p>", z, zRebuildMsg); cgi_reply(); }else{ fprintf(stderr, "%s: %s\n\n%s", fossil_nameofexe(), z, zRebuildMsg); } db_force_rollback(); fossil_exit(1); } static int nBegin = 0; /* Nesting depth of BEGIN */ static int doRollback = 0; /* True to force a rollback */ static int nCommitHook = 0; /* Number of commit hooks */ static struct sCommitHook { int (*xHook)(void); /* Functions to call at db_end_transaction() */ ................................................................................ /* ** Execute a query. Return the first column of the first row ** of the result set as a string. Space to hold the string is ** obtained from malloc(). If the result set is empty, return ** zDefault instead. */ char *db_text(char *zDefault, const char *zSql, ...){ va_list ap; Stmt s; char *z; va_start(ap, zSql); db_vprepare(&s, 0, zSql, ap); va_end(ap); if( db_step(&s)==SQLITE_ROW ){ ................................................................................ } if( zDbName==0 ){ db_err("unable to find the name of a repository database"); } } if( file_access(zDbName, R_OK) || file_size(zDbName)<1024 ){ if( file_access(zDbName, 0) ){ fossil_panic("repository does not exist or" " is in an unreadable directory: %s", zDbName); }else if( file_access(zDbName, R_OK) ){ fossil_panic("read permission denied for repository %s", zDbName); }else{ fossil_panic("not a valid repository: %s", zDbName); } } db_open_or_attach(zDbName, "repository"); g.repositoryOpen = 1; g.zRepositoryName = mprintf("%s", zDbName); /* Cache "allow-symlinks" option, because we'll need it on every stat call */ ................................................................................ if( zRep==0 && nArgUsed && g.argc==nArgUsed+1 ){ zRep = g.argv[nArgUsed]; } if( zRep==0 ){ if( db_open_local()==0 ){ goto rep_not_found; } zRep = db_lget("repository", 0); if( zRep==0 ){ goto rep_not_found; } } db_open_repository(zRep); if( g.repositoryOpen ){ if( (bFlags & OPEN_ANY_SCHEMA)==0 ) db_verify_schema(); return; } rep_not_found: if( (bFlags & OPEN_OK_NOT_FOUND)==0 ){ fossil_fatal("use --repository or -R to specify the repository database"); } } /* ** Return the name of the database "localdb", "configdb", or "repository". */ ................................................................................ /* ** Verify that the repository schema is correct. If it is not correct, ** issue a fatal error and die. */ void db_verify_schema(void){ if( db_schema_is_outofdate() ){ fossil_warning("incorrect repository schema version"); fossil_warning("your repository has schema version \"%s\" " "but this binary expects version \"%s\"", db_get("aux-schema",0), AUX_SCHEMA); fossil_fatal("run \"fossil rebuild\" to fix this problem"); } } |
> > > > > > > > > > > > > > > > > > | | > | | > > > > > > > > > | > > > > > > |
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*/ struct Stmt { Blob sql; /* The SQL for this statement */ sqlite3_stmt *pStmt; /* The results of sqlite3_prepare() */ Stmt *pNext, *pPrev; /* List of all unfinalized statements */ int nStep; /* Number of sqlite3_step() calls */ }; /* ** Copy this to initialize a Stmt object to a clean/empty state. This ** is useful to help avoid assertions when performing cleanup in some ** error handling cases. */ #define empty_Stmt_m {BLOB_INITIALIZER,NULL, NULL, NULL, 0} #endif /* INTERFACE */ const struct Stmt empty_Stmt = empty_Stmt_m; /* ** Call this routine when a database error occurs. */ static void db_err(const char *zFormat, ...){ va_list ap; char *z; int rc = 1; static const char zRebuildMsg[] = "If you have recently updated your fossil executable, you might\n" "need to run \"fossil all rebuild\" to bring the repository\n" "schemas up to date.\n"; va_start(ap, zFormat); z = vmprintf(zFormat, ap); va_end(ap); #ifdef FOSSIL_ENABLE_JSON if( g.json.isJsonMode ){ json_err( 0, z, 1 ); if( g.isHTTP ){ rc = 0 /* avoid HTTP 500 */; } } else #endif /* FOSSIL_ENABLE_JSON */ if( g.xferPanic ){ cgi_reset_content(); @ error Database\serror:\s%F(z) cgi_reply(); } else if( g.cgiOutput ){ g.cgiOutput = 0; cgi_printf("<h1>Database Error</h1>\n" "<pre>%h</pre><p>%s</p>", z, zRebuildMsg); cgi_reply(); }else{ fprintf(stderr, "%s: %s\n\n%s", fossil_nameofexe(), z, zRebuildMsg); } free(z); db_force_rollback(); fossil_exit(rc); } static int nBegin = 0; /* Nesting depth of BEGIN */ static int doRollback = 0; /* True to force a rollback */ static int nCommitHook = 0; /* Number of commit hooks */ static struct sCommitHook { int (*xHook)(void); /* Functions to call at db_end_transaction() */ ................................................................................ /* ** Execute a query. Return the first column of the first row ** of the result set as a string. Space to hold the string is ** obtained from malloc(). If the result set is empty, return ** zDefault instead. */ char *db_text(char const *zDefault, const char *zSql, ...){ va_list ap; Stmt s; char *z; va_start(ap, zSql); db_vprepare(&s, 0, zSql, ap); va_end(ap); if( db_step(&s)==SQLITE_ROW ){ ................................................................................ } if( zDbName==0 ){ db_err("unable to find the name of a repository database"); } } if( file_access(zDbName, R_OK) || file_size(zDbName)<1024 ){ if( file_access(zDbName, 0) ){ #ifdef FOSSIL_ENABLE_JSON g.json.resultCode = FSL_JSON_E_DB_NOT_FOUND; #endif fossil_panic("repository does not exist or" " is in an unreadable directory: %s", zDbName); }else if( file_access(zDbName, R_OK) ){ #ifdef FOSSIL_ENABLE_JSON g.json.resultCode = FSL_JSON_E_DENIED; #endif fossil_panic("read permission denied for repository %s", zDbName); }else{ #ifdef FOSSIL_ENABLE_JSON g.json.resultCode = FSL_JSON_E_DB_NOT_VALID; #endif fossil_panic("not a valid repository: %s", zDbName); } } db_open_or_attach(zDbName, "repository"); g.repositoryOpen = 1; g.zRepositoryName = mprintf("%s", zDbName); /* Cache "allow-symlinks" option, because we'll need it on every stat call */ ................................................................................ if( zRep==0 && nArgUsed && g.argc==nArgUsed+1 ){ zRep = g.argv[nArgUsed]; } if( zRep==0 ){ if( db_open_local()==0 ){ goto rep_not_found; } zRep = db_lget("repository", 0)/*leak here*/; if( zRep==0 ){ goto rep_not_found; } } db_open_repository(zRep); if( g.repositoryOpen ){ if( (bFlags & OPEN_ANY_SCHEMA)==0 ) db_verify_schema(); return; } rep_not_found: if( (bFlags & OPEN_OK_NOT_FOUND)==0 ){ #ifdef FOSSIL_ENABLE_JSON g.json.resultCode = FSL_JSON_E_DB_NOT_FOUND; #endif fossil_fatal("use --repository or -R to specify the repository database"); } } /* ** Return the name of the database "localdb", "configdb", or "repository". */ ................................................................................ /* ** Verify that the repository schema is correct. If it is not correct, ** issue a fatal error and die. */ void db_verify_schema(void){ if( db_schema_is_outofdate() ){ #ifdef FOSSIL_ENABLE_JSON g.json.resultCode = FSL_JSON_E_DB_NEEDS_REBUILD; #endif fossil_warning("incorrect repository schema version"); fossil_warning("your repository has schema version \"%s\" " "but this binary expects version \"%s\"", db_get("aux-schema",0), AUX_SCHEMA); fossil_fatal("run \"fossil rebuild\" to fix this problem"); } } |
Added src/json.c.
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#ifdef FOSSIL_ENABLE_JSON /* ** Copyright (c) 2011 D. Richard Hipp ** ** This program is free software; you can redistribute it and/or ** modify it under the terms of the Simplified BSD License (also ** known as the "2-Clause License" or "FreeBSD License".) ** This program is distributed in the hope that it will be useful, ** but without any warranty; without even the implied warranty of ** merchantability or fitness for a particular purpose. ** ** Author contact information: ** drh@hwaci.com ** http://www.hwaci.com/drh/ ** ******************************************************************************* ** ** Code for the JSON API. ** ** For notes regarding the public JSON interface, please see: ** ** https://docs.google.com/document/d/1fXViveNhDbiXgCuE7QDXQOKeFzf2qNUkBEgiUvoqFN4/edit ** ** ** Notes for hackers... ** ** Here's how command/page dispatching works: json_page_top() (in HTTP mode) or ** json_cmd_top() (in CLI mode) catch the "json" path/command. Those functions then ** dispatch to a JSON-mode-specific command/page handler with the type fossil_json_f(). ** See the API docs for that typedef (below) for the semantics of the callbacks. ** ** */ #include "config.h" #include "VERSION.h" #include "json.h" #include <assert.h> #include <time.h> #if INTERFACE #include "json_detail.h" /* workaround for apparent enum limitation in makeheaders */ #endif const FossilJsonKeys_ FossilJsonKeys = { "anonymousSeed" /*anonymousSeed*/, "authToken" /*authToken*/, "COMMAND_PATH" /*commandPath*/, "mtime" /*mtime*/, "payload" /* payload */, "requestId" /*requestId*/, "resultCode" /*resultCode*/, "resultText" /*resultText*/, "timestamp" /*timestamp*/ }; /* ** Internal helpers to manipulate a byte array as a bitset. The B ** argument must be-a array at least (BIT/8+1) bytes long. ** The BIT argument is the bit number to query/set/clear/toggle. */ #define BITSET_BYTEFOR(B,BIT) ((B)[ BIT / 8 ]) #define BITSET_SET(B,BIT) ((BITSET_BYTEFOR(B,BIT) |= (0x01 << (BIT%8))),0x01) #define BITSET_UNSET(B,BIT) ((BITSET_BYTEFOR(B,BIT) &= ~(0x01 << (BIT%8))),0x00) #define BITSET_GET(B,BIT) ((BITSET_BYTEFOR(B,BIT) & (0x01 << (BIT%8))) ? 0x01 : 0x00) #define BITSET_TOGGLE(B,BIT) (BITSET_GET(B,BIT) ? (BITSET_UNSET(B,BIT)) : (BITSET_SET(B,BIT))) /* Timer code taken from sqlite3's shell.c, modified slightly. FIXME: move the timer into the fossil core API so that we can start the timer early on in the app init phase. Right now we're just timing the json ops themselves. */ #if !defined(_WIN32) && !defined(WIN32) && !defined(__OS2__) && !defined(__RTP__) && !defined(_WRS_KERNEL) #include <sys/time.h> #include <sys/resource.h> /* Saved resource information for the beginning of an operation */ static struct rusage sBegin; /* ** Begin timing an operation */ static void beginTimer(void){ getrusage(RUSAGE_SELF, &sBegin); } /* Return the difference of two time_structs in milliseconds */ static double timeDiff(struct timeval *pStart, struct timeval *pEnd){ return ((pEnd->tv_usec - pStart->tv_usec)*0.001 + (double)((pEnd->tv_sec - pStart->tv_sec)*1000.0)); } /* ** Print the timing results. */ static double endTimer(void){ struct rusage sEnd; getrusage(RUSAGE_SELF, &sEnd); return timeDiff(&sBegin.ru_utime, &sEnd.ru_utime) + timeDiff(&sBegin.ru_stime, &sEnd.ru_stime); #if 0 printf("CPU Time: user %f sys %f\n", timeDiff(&sBegin.ru_utime, &sEnd.ru_utime), timeDiff(&sBegin.ru_stime, &sEnd.ru_stime)); #endif } #define BEGIN_TIMER beginTimer() #define END_TIMER endTimer() #define HAS_TIMER 1 #elif (defined(_WIN32) || defined(WIN32)) #include <windows.h> /* Saved resource information for the beginning of an operation */ static HANDLE hProcess; static FILETIME ftKernelBegin; static FILETIME ftUserBegin; typedef BOOL (WINAPI *GETPROCTIMES)(HANDLE, LPFILETIME, LPFILETIME, LPFILETIME, LPFILETIME); static GETPROCTIMES getProcessTimesAddr = NULL; /* ** Check to see if we have timer support. Return 1 if necessary ** support found (or found previously). */ static int hasTimer(void){ if( getProcessTimesAddr ){ return 1; } else { /* GetProcessTimes() isn't supported in WIN95 and some other Windows versions. ** See if the version we are running on has it, and if it does, save off ** a pointer to it and the current process handle. */ hProcess = GetCurrentProcess(); if( hProcess ){ HINSTANCE hinstLib = LoadLibrary(TEXT("Kernel32.dll")); if( NULL != hinstLib ){ getProcessTimesAddr = (GETPROCTIMES) GetProcAddress(hinstLib, "GetProcessTimes"); if( NULL != getProcessTimesAddr ){ return 1; } FreeLibrary(hinstLib); } } } return 0; } /* ** Begin timing an operation */ static void beginTimer(void){ if( getProcessTimesAddr ){ FILETIME ftCreation, ftExit; getProcessTimesAddr(hProcess, &ftCreation, &ftExit, &ftKernelBegin, &ftUserBegin); } } /* Return the difference of two FILETIME structs in milliseconds */ static double timeDiff(FILETIME *pStart, FILETIME *pEnd){ sqlite_int64 i64Start = *((sqlite_int64 *) pStart); sqlite_int64 i64End = *((sqlite_int64 *) pEnd); return (double) ((i64End - i64Start) / 10000.0); } /* ** Print the timing results. */ static double endTimer(void){ if(getProcessTimesAddr){ FILETIME ftCreation, ftExit, ftKernelEnd, ftUserEnd; getProcessTimesAddr(hProcess, &ftCreation, &ftExit, &ftKernelEnd, &ftUserEnd); return timeDiff(&ftUserBegin, &ftUserEnd) + timeDiff(&ftKernelBegin, &ftKernelEnd); } } #define BEGIN_TIMER beginTimer() #define END_TIMER endTimer() #define HAS_TIMER hasTimer() #else #define BEGIN_TIMER #define END_TIMER 0.0 #define HAS_TIMER 0 #endif char fossil_has_json(){ return g.json.isJsonMode && (g.isHTTP || g.json.post.o); } /* ** Placeholder /json/XXX page impl for NYI (Not Yet Implemented) ** (but planned) pages/commands. */ cson_value * json_page_nyi(){ g.json.resultCode = FSL_JSON_E_NYI; return NULL; } /* ** Given a FossilJsonCodes value, it returns a string suitable for use ** as a resultCode string. Returns some unspecified non-empty string ** if errCode is not one of the FossilJsonCodes values. */ static char const * json_err_cstr( int errCode ){ switch( errCode ){ case 0: return "Success"; #define C(X,V) case FSL_JSON_E_ ## X: return V C(GENERIC,"Generic error"); C(INVALID_REQUEST,"Invalid request"); C(UNKNOWN_COMMAND,"Unknown Command"); C(UNKNOWN,"Unknown error"); C(TIMEOUT,"Timeout reached"); C(ASSERT,"Assertion failed"); C(ALLOC,"Resource allocation failed"); C(NYI,"Not yet implemented"); C(PANIC,"x"); C(MANIFEST_READ_FAILED,"Reading artifact manifest failed"); C(FILE_OPEN_FAILED,"Opening file failed"); C(AUTH,"Authentication error"); C(MISSING_AUTH,"Authentication info missing from request"); C(DENIED,"Access denied"); C(WRONG_MODE,"Request not allowed (wrong operation mode)"); C(LOGIN_FAILED,"Login failed"); C(LOGIN_FAILED_NOSEED,"Anonymous login attempt was missing password seed"); C(LOGIN_FAILED_NONAME,"Login failed - name not supplied"); C(LOGIN_FAILED_NOPW,"Login failed - password not supplied"); C(LOGIN_FAILED_NOTFOUND,"Login failed - no match found"); C(USAGE,"Usage error"); C(INVALID_ARGS,"Invalid argument(s)"); C(MISSING_ARGS,"Missing argument(s)"); C(AMBIGUOUS_UUID,"Resource identifier is ambiguous"); C(UNRESOLVED_UUID,"Provided uuid/tag/branch could not be resolved"); C(RESOURCE_ALREADY_EXISTS,"Resource already exists"); C(RESOURCE_NOT_FOUND,"Resource not found"); C(DB,"Database error"); C(STMT_PREP,"Statement preparation failed"); C(STMT_BIND,"Statement parameter binding failed"); C(STMT_EXEC,"Statement execution/stepping failed"); C(DB_LOCKED,"Database is locked"); C(DB_NEEDS_REBUILD,"Fossil repository needs to be rebuilt"); C(DB_NOT_FOUND,"Fossil repository db file could not be found."); C(DB_NOT_VALID, "Fossil repository db file is not valid."); #undef C default: return "Unknown Error"; } } /* ** Implements the cson_data_dest_f() interface and outputs the data to ** a fossil Blob object. pState must be-a initialized (Blob*), to ** which n bytes of src will be appended. **/ int cson_data_dest_Blob(void * pState, void const * src, unsigned int n){ Blob * b = (Blob*)pState; blob_append( b, (char const *)src, (int)n ) /* will die on OOM */; return 0; } /* ** Implements the cson_data_source_f() interface and reads input from ** a fossil Blob object. pState must be-a (Blob*) populated with JSON ** data. */ int cson_data_src_Blob(void * pState, void * dest, unsigned int * n){ Blob * b = (Blob*)pState; *n = blob_read( b, dest, *n ); return 0; } /* ** Convenience wrapper around cson_output() which appends the output ** to pDest. pOpt may be NULL, in which case g.json.outOpt will be used. */ int cson_output_Blob( cson_value const * pVal, Blob * pDest, cson_output_opt const * pOpt ){ return cson_output( pVal, cson_data_dest_Blob, pDest, pOpt ? pOpt : &g.json.outOpt ); } /* ** Convenience wrapper around cson_parse() which reads its input ** from pSrc. pSrc is rewound before parsing. ** ** pInfo may be NULL. If it is not NULL then it will contain details ** about the parse state when this function returns. ** ** On success a new JSON Object or Array is returned (owned by the ** caller). On error NULL is returned. */ cson_value * cson_parse_Blob( Blob * pSrc, cson_parse_info * pInfo ){ cson_value * root = NULL; blob_rewind( pSrc ); cson_parse( &root, cson_data_src_Blob, pSrc, NULL, pInfo ); return root; } /* ** Implements the cson_data_dest_f() interface and outputs the data to ** cgi_append_content(). pState is ignored. **/ int cson_data_dest_cgi(void * pState, void const * src, unsigned int n){ cgi_append_content( (char const *)src, (int)n ); return 0; } /* ** Returns a string in the form FOSSIL-XXXX, where XXXX is a ** left-zero-padded value of code. The returned buffer is static, and ** must be copied if needed for later. The returned value will always ** be 11 bytes long (not including the trailing NUL byte). ** ** In practice we will only ever call this one time per app execution ** when constructing the JSON response envelope, so the static buffer ** "shouldn't" be a problem. ** */ char const * json_rc_cstr( int code ){ enum { BufSize = 12 }; static char buf[BufSize] = {'F','O','S','S','I','L','-',0}; assert((code >= 1000) && (code <= 9999) && "Invalid Fossil/JSON code."); sprintf(buf+7,"%04d", code); return buf; } /* ** Adds v to the API-internal cleanup mechanism. key is ingored ** (legacy) but might be re-introduced and "should" be a unique ** (app-wide) value. Failure to insert an item may be caused by any ** of the following: ** ** - Allocation error. ** - g.json.gc.a is NULL ** - key is NULL or empty. ** ** Returns 0 on success. ** ** Ownership of v is transfered to (or shared with) g.json.gc, and v ** will be valid until that object is cleaned up or some internal code ** incorrectly removes it from the gc (which we never do). If this ** function fails, it is fatal to the app (as it indicates an ** allocation error (more likely than not) or a serious internal error ** such as numeric overflow). */ void json_gc_add( char const * key, cson_value * v ){ int const rc = cson_array_append( g.json.gc.a, v ); assert( NULL != g.json.gc.a ); if( 0 != rc ){ cson_value_free( v ); } assert( (0==rc) && "Adding item to GC failed." ); if(0!=rc){ fprintf(stderr,"%s: FATAL: alloc error.\n", fossil_nameofexe()) /* reminder: allocation error is the only reasonable cause of error here, provided g.json.gc.a and v are not NULL. */ ; fossil_exit(1)/*not fossil_panic() b/c it might land us somewhere where this function is called again. */; } } /* ** Returns the value of json_rc_cstr(code) as a new JSON ** string, which is owned by the caller and must eventually ** be cson_value_free()d or transfered to a JSON container. */ cson_value * json_rc_string( int code ){ return cson_value_new_string( json_rc_cstr(code), 11 ); } cson_value * json_new_string( char const * str ){ return str ? cson_value_new_string(str,strlen(str)) : NULL; } cson_value * json_new_string_f( char const * fmt, ... ){ cson_value * v; char * zStr; va_list vargs; va_start(vargs,fmt); zStr = vmprintf(fmt,vargs); va_end(vargs); v = cson_value_new_string(zStr, strlen(zStr)); free(zStr); return v; } cson_value * json_new_int( int v ){ return cson_value_new_integer((cson_int_t)v); } /* ** Gets a POST/POST.payload/GET/COOKIE/ENV value. The returned memory ** is owned by the g.json object (one of its sub-objects). Returns ** NULL if no match is found. ** ** ENV means the system environment (getenv()). ** ** Precedence: POST.payload, GET/COOKIE/non-JSON POST, JSON POST, ENV. ** ** FIXME: the precedence SHOULD be: GET, POST.payload, POST, COOKIE, ** ENV, but the amalgamation of the GET/POST vars makes it difficult ** for me to do that. Since fossil only uses one cookie, cookie ** precedence isn't a real/high-priority problem. */ cson_value * json_getenv( char const * zKey ){ cson_value * rc; rc = g.json.reqPayload.o ? cson_object_get( g.json.reqPayload.o, zKey ) : NULL; if(rc){ return rc; } rc = cson_object_get( g.json.param.o, zKey ); if( rc ){ return rc; } rc = cson_object_get( g.json.post.o, zKey ); if(rc){ return rc; }else{ char const * cv = PD(zKey,NULL); if(!cv && !g.isHTTP){ /* reminder to self: in CLI mode i'd like to try find_option(zKey,NULL,XYZ) here, but we don't have a sane default for the XYZ param here. */ cv = getenv(zKey); } if(cv){/*transform it to JSON for later use.*/ /* use sscanf() to figure out if it's an int, and transform it to JSON int if it is. FIXME: use strtol(), since it has more accurate error handling. */ int intVal = -1; char endOfIntCheck; int const scanRc = sscanf(cv,"%d%c",&intVal, &endOfIntCheck) /* The %c bit there is to make sure that we don't accept 123x as a number. sscanf() returns the number of tokens successfully parsed, so an RC of 1 will be correct for "123" but "123x" will have RC==2. But it appears to not be working that way :/ */ ; if(1==scanRc){ json_setenv( zKey, cson_value_new_integer(intVal) ); }else{ rc = cson_value_new_string(cv,strlen(cv)); json_setenv( zKey, rc ); } return rc; }else{ return NULL; } } } /* ** Wrapper around json_getenv() which... ** ** If it finds a value and that value is-a JSON number or is a string ** which looks like an integer or is-a JSON bool/null then it is ** converted to an int. If none of those apply then dflt is returned. */ int json_getenv_int(char const * pKey, int dflt ){ cson_value const * v = json_getenv(pKey); if(!v){ return dflt; }else if( cson_value_is_number(v) ){ return (int)cson_value_get_integer(v); }else if( cson_value_is_string(v) ){ char const * sv = cson_string_cstr(cson_value_get_string(v)); assert( (NULL!=sv) && "This is quite unexpected." ); return sv ? atoi(sv) : dflt; }else if( cson_value_is_bool(v) ){ return cson_value_get_bool(v) ? 1 : 0; }else if( cson_value_is_null(v) ){ return 0; }else{ /* we should arguably treat JSON null as 0. */ return dflt; } } /* ** Wrapper around json_getenv() which tries to evaluate a payload/env ** value as a boolean. Uses mostly the same logic as ** json_getenv_int(), with the addition that string values which ** either start with a digit 1..9 or the letters [tT] are considered ** to be true. If this function cannot find a matching key/value then ** dflt is returned. e.g. if it finds the key but the value is-a ** Object then dftl is returned. ** ** If an entry is found, this function guarantees that it will return ** either 0 or 1, as opposed to "0 or non-zero", so that clients can ** pass a different value as dflt. Thus they can use, e.g. -1 to know ** whether or not this function found a match (it will return -1 in ** that case). */ char json_getenv_bool(char const * pKey, char dflt ){ cson_value const * v = json_getenv(pKey); if(!v){ return dflt; }else if( cson_value_is_number(v) ){ return cson_value_get_integer(v) ? 1 : 0; }else if( cson_value_is_string(v) ){ char const * sv = cson_string_cstr(cson_value_get_string(v)); if(!*sv || ('0'==*sv)){ return 0; }else{ return (('t'==*sv) || ('T'==*sv) || (('1'<=*sv) && ('9'>=*sv))) ? 1 : 0; } }else if( cson_value_is_bool(v) ){ return cson_value_get_bool(v) ? 1 : 0; }else if( cson_value_is_null(v) ){ return 0; }else{ return dflt; } } /* ** Returns the string form of a json_getenv() value, but ONLY If that ** value is-a String. Non-strings are not converted to strings for ** this purpose. Returned memory is owned by g.json or fossil and is ** valid until end-of-app or the given key is replaced in fossil's ** internals via cgi_replace_parameter() and friends or json_setenv(). */ char const * json_getenv_cstr( char const * zKey ){ return cson_value_get_cstr( json_getenv(zKey) ); } /* ** An extended form of find_option() which tries to look up a combo ** GET/POST/CLI argument. ** ** zKey must be the GET/POST parameter key. zCLILong must be the "long ** form" CLI flag (NULL means to use zKey). zCLIShort may be NULL or ** the "short form" CLI flag (if NULL, no short form is used). ** ** If argPos is >=0 and no other match is found, ** json_command_arg(argPos) is also checked. ** ** On error (no match found) NULL is returned. ** ** This ONLY works for String JSON/GET/CLI values, not JSON ** booleans and whatnot. */ char const * json_find_option_cstr2(char const * zKey, char const * zCLILong, char const * zCLIShort, int argPos){ char const * rc = NULL; assert(NULL != zKey); if(!g.isHTTP){ rc = find_option(zCLILong ? zCLILong : zKey, zCLIShort, 1); } if(!rc && fossil_has_json()){ rc = json_getenv_cstr(zKey); } if(!rc && (argPos>=0)){ rc = json_command_arg((unsigned char)argPos); } return rc; } char const * json_find_option_cstr(char const * zKey, char const * zCLILong, char const * zCLIShort){ return json_find_option_cstr2(zKey, zCLIShort, zCLIShort, -1); } /* ** The boolean equivalent of json_find_option_cstr(). ** If the option is not found, dftl is returned. */ char json_find_option_bool(char const * zKey, char const * zCLILong, char const * zCLIShort, char dflt ){ char rc = -1; if(!g.isHTTP){ if(NULL != find_option(zCLILong ? zCLILong : zKey, zCLIShort, 0)){ rc = 1; } } if((-1==rc) && fossil_has_json()){ rc = json_getenv_bool(zKey,-1); } return (-1==rc) ? dflt : rc; } /* ** The integer equivalent of json_find_option_cstr(). ** If the option is not found, dftl is returned. */ int json_find_option_int(char const * zKey, char const * zCLILong, char const * zCLIShort, int dflt ){ enum { Magic = -947 }; int rc = Magic; if(!g.isHTTP){ /* FIXME: use strtol() for better error/dflt handling. */ char const * opt = find_option(zCLILong ? zCLILong : zKey, zCLIShort, 1); if(NULL!=opt){ rc = atoi(opt); } } if(Magic==rc){ rc = json_getenv_int(zKey,Magic); } return (Magic==rc) ? dflt : rc; } /* ** Adds v to g.json.param.o using the given key. May cause any prior ** item with that key to be destroyed (depends on current reference ** count for that value). On success, transfers (or shares) ownership ** of v to (or with) g.json.param.o. On error ownership of v is not ** modified. */ int json_setenv( char const * zKey, cson_value * v ){ return cson_object_set( g.json.param.o, zKey, v ); } /* ** Guesses a RESPONSE Content-Type value based (primarily) on the ** HTTP_ACCEPT header. ** ** It will try to figure out if the client can support ** application/json or application/javascript, and will fall back to ** text/plain if it cannot figure out anything more specific. ** ** Returned memory is static and immutable, but if the environment ** changes after calling this then subsequent calls to this function ** might return different (also static/immutable) values. */ char const * json_guess_content_type(){ char const * cset; char doUtf8; cset = PD("HTTP_ACCEPT_CHARSET",NULL); doUtf8 = ((NULL == cset) || (NULL!=strstr("utf-8",cset))) ? 1 : 0; if( g.json.jsonp ){ return doUtf8 ? "application/javascript; charset=utf-8" : "application/javascript"; }else{ /* Content-type If the browser does not sent an ACCEPT for application/json then we fall back to text/plain. */ char const * cstr; cstr = PD("HTTP_ACCEPT",NULL); if( NULL == cstr ){ return doUtf8 ? "application/json; charset=utf-8" : "application/json"; }else{ if( strstr( cstr, "application/json" ) || strstr( cstr, "*/*" ) ){ return doUtf8 ? "application/json; charset=utf-8" : "application/json"; }else{ return "text/plain"; } } } } /* ** Sends pResponse to the output stream as the response object. This ** function does no validation of pResponse except to assert() that it ** is not NULL. The caller is responsible for ensuring that it meets ** API response envelope conventions. ** ** In CLI mode pResponse is sent to stdout immediately. In HTTP ** mode pResponse replaces any current CGI content but cgi_reply() ** is not called to flush the output. ** ** If g.json.jsonp is not NULL then the content type is set to ** application/javascript and the output is wrapped in a jsonp ** wrapper. */ void json_send_response( cson_value const * pResponse ){ assert( NULL != pResponse ); if( g.isHTTP ){ cgi_reset_content(); if( g.json.jsonp ){ cgi_printf("%s(",g.json.jsonp); } cson_output( pResponse, cson_data_dest_cgi, NULL, &g.json.outOpt ); if( g.json.jsonp ){ cgi_append_content(")",1); } }else{/*CLI mode*/ if( g.json.jsonp ){ fprintf(stdout,"%s(",g.json.jsonp); } cson_output_FILE( pResponse, stdout, &g.json.outOpt ); if( g.json.jsonp ){ fwrite(")\n", 2, 1, stdout); } } } /* ** Returns the current request's JSON authentication token, or NULL if ** none is found. The token's memory is owned by (or shared with) ** g.json. ** ** If an auth token is found in the GET/POST request data then fossil ** is given that data for use in authentication for this ** session. i.e. the GET/POST data overrides fossil's authentication ** cookie value (if any) and also works with clients which do not ** support cookies. ** ** Must be called once before login_check_credentials() is called or ** we will not be able to replace fossil's internal idea of the auth ** info in time (and future changes to that state may cause unexpected ** results). ** ** The result of this call are cached for future calls. */ cson_value * json_auth_token(){ if( !g.json.authToken ){ /* Try to get an authorization token from GET parameter, POSTed JSON, or fossil cookie (in that order). */ g.json.authToken = json_getenv(FossilJsonKeys.authToken); if(g.json.authToken && cson_value_is_string(g.json.authToken) && !PD(login_cookie_name(),NULL)){ /* tell fossil to use this login info. FIXME?: because the JSON bits don't carry around login_cookie_name(), there is a potential login hijacking window here. We may need to change the JSON auth token to be in the form: login_cookie_name()=... Then again, the hardened cookie value helps ensure that only a proper key/value match is valid. */ cgi_replace_parameter( login_cookie_name(), cson_value_get_cstr(g.json.authToken) ); }else if( g.isHTTP ){ /* try fossil's conventional cookie. */ /* Reminder: chicken/egg scenario regarding db access in CLI mode because login_cookie_name() needs the db. CLI mode does not use any authentication, so we don't need to support it here. */ char const * zCookie = P(login_cookie_name()); if( zCookie && *zCookie ){ /* Transfer fossil's cookie to JSON for downstream convenience... */ cson_value * v = cson_value_new_string(zCookie, strlen(zCookie)); json_gc_add( FossilJsonKeys.authToken, v ); g.json.authToken = v; } } } return g.json.authToken; } /* ** IFF json.reqPayload.o is not NULL then this returns ** cson_object_get(json.reqPayload.o,pKey), else it returns NULL. ** ** The returned value is owned by (or shared with) json.reqPayload.v. */ cson_value * json_req_payload_get(char const *pKey){ return g.json.reqPayload.o ? cson_object_get(g.json.reqPayload.o,pKey) : NULL; } /* ** Initializes some JSON bits which need to be initialized relatively ** early on. It should only be called from cgi_init() or ** json_cmd_top() (early on in those functions). ** ** Initializes g.json.gc and g.json.param. This code does not (and ** must not) rely on any of the fossil environment having been set ** up. e.g. it must not use cgi_parameter() and friends because this ** must be called before those data are initialized. */ void json_main_bootstrap(){ cson_value * v; assert( (NULL == g.json.gc.v) && "cgi_json_bootstrap() was called twice!" ); /* g.json.gc is our "garbage collector" - where we put JSON values which need a long lifetime but don't have a logical parent to put them in. */ v = cson_value_new_array(); g.json.gc.v = v; g.json.gc.a = cson_value_get_array(v); cson_value_add_reference(v) /* Needed to allow us to include this value in other JSON containers without transfering ownership to those containers. All other persistent g.json.XXX.v values get appended to g.json.gc.a, and therefore already have a live reference for this purpose. */ ; /* g.json.param holds the JSONized counterpart of fossil's cgi_parameter_xxx() family of data. We store them as JSON, as opposed to using fossil's data directly, because we can retain full type information for data this way (as opposed to it always being of type string). */ v = cson_value_new_object(); g.json.param.v = v; g.json.param.o = cson_value_get_object(v); json_gc_add("$PARAMS", v); } /* ** Appends a warning object to the (pending) JSON response. ** ** Code must be a FSL_JSON_W_xxx value from the FossilJsonCodes enum. ** ** A Warning object has this JSON structure: ** ** { "code":integer, "text":"string" } ** ** But the text part is optional. ** ** If msg is non-NULL and not empty then it is used as the "text" ** property's value. It is copied, and need not refer to static ** memory. ** ** CURRENTLY this code only allows a given warning code to be ** added one time, and elides subsequent warnings. The intention ** is to remove that burden from loops which produce warnings. ** ** FIXME: if msg is NULL then use a standard string for ** the given code. If !*msg then elide the "text" property, ** for consistency with how json_err() works. */ void json_warn( int code, char const * fmt, ... ){ cson_object * obj = NULL; assert( (code>FSL_JSON_W_START) && (code<FSL_JSON_W_END) && "Invalid warning code."); if(!g.json.warnings.v){ g.json.warnings.v = cson_value_new_array(); assert((NULL != g.json.warnings.v) && "Alloc error."); g.json.warnings.a = cson_value_get_array(g.json.warnings.v); json_gc_add("$WARNINGS",g.json.warnings.v); } obj = cson_new_object(); cson_array_append(g.json.warnings.a, cson_object_value(obj)); cson_object_set(obj,"code",cson_value_new_integer(code)); if(fmt && *fmt){ /* FIXME: treat NULL fmt as standard warning message for the code, but we don't have those yet. */ va_list vargs; char * msg; va_start(vargs,fmt); msg = vmprintf(fmt,vargs); va_end(vargs); cson_object_set(obj,"text", cson_value_new_string(msg,strlen(msg))); free(msg); } } /* ** Splits zStr (which must not be NULL) into tokens separated by the ** given separator character. If doDeHttp is true then each element ** will be passed through dehttpize(), otherwise they are used ** as-is. Note that tokenization happens before dehttpize(), ** which is significant if the ENcoded tokens might contain the ** separator character. ** ** Each new element is appended to the given target array object, ** which must not be NULL and ownership of it is not changed by this ** call. ** ** On success, returns the number of tokens _encountered_. On error a ** NEGATIVE number is returned - its absolute value is the number of ** tokens encountered (i.e. it reveals which token in zStr was ** problematic). ** ** Achtung: leading and trailing whitespace of elements are elided. ** ** Achtung: empty elements will be skipped, meaning consecutive empty ** elements are collapsed. */ int json_string_split( char const * zStr, char separator, char doDeHttp, cson_array * target ){ char const * p = zStr /* current byte */; char const * head /* current start-of-token */; unsigned int len = 0 /* current token's length */; int rc = 0 /* return code (number of added elements)*/; char skipWs = fossil_isspace(separator) ? 0 : 1; assert( zStr && target ); while( fossil_isspace(*p) ){ ++p; } head = p; for( ; ; ++p){ if( !*p || (separator == *p) ){ if( len ){/* append head..(head+len) as next array element. */ cson_value * part = NULL; char * zPart = NULL; ++rc; assert( head != p ); zPart = (char*)malloc(len+1); assert( (zPart != NULL) && "malloc failure" ); memcpy(zPart, head, len); zPart[len] = 0; if(doDeHttp){ dehttpize(zPart); } if( *zPart ){ /* should only fail if someone manages to url-encoded a NUL byte */ part = cson_value_new_string(zPart, strlen(zPart)); if( 0 != cson_array_append( target, part ) ){ cson_value_free(part); rc = -rc; break; } }else{ assert(0 && "i didn't think this was possible!"); fprintf(stderr,"%s:%d: My God! It's full of stars!\n", __FILE__, __LINE__); fossil_exit(1) /* Not fossil_panic() b/c this code needs to be able to run before some of the fossil/json bits are initialized, and fossil_panic() calls into the JSON API. */ ; } free(zPart); len = 0; } if( !*p ){ break; } head = p+1; while( *head && fossil_isspace(*head) ){ ++head; ++p; } if(!*head){ break; } continue; } ++len; } return rc; } /* ** Wrapper around json_string_split(), taking the same first 3 ** parameters as this function, but returns the results as a JSON ** Array (if splitting produced tokens) or NULL (if splitting failed ** in any way or produced no tokens). ** ** The returned value is owned by the caller. If not NULL then it ** _will_ have a JSON type of Array or Null. */ cson_value * json_string_split2( char const * zStr, char separator, char doDeHttp ){ cson_value * v = cson_value_new_array(); cson_array * a = cson_value_get_array(v); int rc = json_string_split( zStr, separator, doDeHttp, a ); if( 0 == rc ){ cson_value_free(v); v = NULL; }else if(rc<0){ cson_value_free(v); v = NULL; } return v; } /* ** Performs some common initialization of JSON-related state. Must be ** called by the json_page_top() and json_cmd_top() dispatching ** functions to set up the JSON stat used by the dispatched functions. ** ** Implicitly sets up the login information state in CGI mode, but ** does not perform any permissions checking. It _might_ (haven't ** tested this) die with an error if an auth cookie is malformed. ** ** This must be called by the top-level JSON command dispatching code ** before they do any work. ** ** This must only be called once, or an assertion may be triggered. */ static void json_mode_bootstrap(){ static char once = 0 /* guard against multiple runs */; char const * zPath = P("PATH_INFO"); cson_value * pathSplit = NULL; assert( (0==once) && "json_mode_bootstrap() called too many times!"); if( once ){ return; }else{ once = 1; } g.json.isJsonMode = 1; g.json.resultCode = 0; g.json.cmd.offset = -1; g.json.jsonp = PD("jsonp",NULL) /* FIXME: do some sanity checking on g.json.jsonp and ignore it if it is not halfway reasonable. */ ; if( !g.isHTTP && g.fullHttpReply ){ /* workaround for server mode, so we see it as CGI mode. */ g.isHTTP = 1; } if(g.isHTTP){ cgi_set_content_type(json_guess_content_type()) /* reminder: must be done after g.json.jsonp is initialized */ ; #if 0 /* Calling this seems to trigger an SQLITE_MISUSE warning??? Maybe it's not legal to set the logger more than once? */ sqlite3_config(SQLITE_CONFIG_LOG, NULL, 0) /* avoids debug messages on stderr in JSON mode */ ; #endif } g.json.cmd.v = cson_value_new_array(); g.json.cmd.a = cson_value_get_array(g.json.cmd.v); json_gc_add( FossilJsonKeys.commandPath, g.json.cmd.v ); /* The following if/else block translates the PATH_INFO path (in CLI/server modes) or g.argv (CLI mode) into an internal list so that we can simplify command dispatching later on. Note that translating g.argv this way is overkill but allows us to avoid CLI-only special-case handling in other code, e.g. json_command_arg(). */ if( zPath ){/* Either CGI or server mode... */ /* Translate PATH_INFO into JSON array for later convenience. */ json_string_split(zPath, '/', 1, g.json.cmd.a); }else{/* assume CLI mode */ int i; char const * arg; cson_value * part; for(i = 1/*skip argv[0]*/; i < g.argc; ++i ){ arg = g.argv[i]; if( !arg || !*arg ){ continue; } if('-' == *arg){ /* workaround to skip CLI args so that json_command_arg() does not see them. This assumes that all arguments come LAST on the command line. */ break; } part = cson_value_new_string(arg,strlen(arg)); cson_array_append(g.json.cmd.a, part); } } while(!g.isHTTP){ /* Simulate JSON POST data via input file. Pedantic reminder: error handling does not honor user-supplied g.json.outOpt because outOpt cannot (generically) be configured until after POST-reading is finished. */ FILE * inFile = NULL; char const * jfile = find_option("json-input",NULL,1); if(!jfile || !*jfile){ break; } inFile = (0==strcmp("-",jfile)) ? stdin : fopen(jfile,"rb"); if(!inFile){ g.json.resultCode = FSL_JSON_E_FILE_OPEN_FAILED; fossil_fatal("Could not open JSON file [%s].",jfile) /* Does not return. */ ; } cgi_parse_POST_JSON(inFile, 0); if( stdin != inFile ){ fclose(inFile); } break; } /* g.json.reqPayload exists only to simplify some of our access to the request payload. We currently only use this in the context of Object payloads, not Arrays, strings, etc. */ g.json.reqPayload.v = cson_object_get( g.json.post.o, FossilJsonKeys.payload ); if( g.json.reqPayload.v ){ g.json.reqPayload.o = cson_value_get_object( g.json.reqPayload.v ) /* g.json.reqPayload.o may legally be NULL, which means only that g.json.reqPayload.v is-not-a Object. */; } /* Anything which needs json_getenv() and friends should go after this point. */ if(1 == cson_array_length_get(g.json.cmd.a)){ /* special case: if we're at the top path, look for a "command" request arg which specifies which command to run. */ char const * cmd = json_getenv_cstr("command"); if(cmd){ json_string_split(cmd, '/', 0, g.json.cmd.a); g.json.cmd.commandStr = cmd; } } if(!g.json.jsonp){ g.json.jsonp = json_find_option_cstr("jsonp",NULL,NULL); } if(!g.isHTTP){ g.json.errorDetailParanoia = 0 /*disable error code dumb-down for CLI mode*/; } {/* set up JSON output formatting options. */ int indent = -1; char const * indentStr = NULL; indent = json_find_option_int("indent",NULL,"I",-1); g.json.outOpt.indentation = (0>indent) ? (g.isHTTP ? 0 : 1) : (unsigned char)indent; g.json.outOpt.addNewline = g.isHTTP ? 0 : (g.json.jsonp ? 0 : 1); } if( g.isHTTP ){ json_auth_token()/* will copy our auth token, if any, to fossil's core, which we need before we call login_check_credentials(). */; login_check_credentials()/* populates g.perm */; } else{ db_find_and_open_repository(OPEN_ANY_SCHEMA,0); } } /* ** Returns the ndx'th item in the "command path", where index 0 is the ** position of the "json" part of the path. Returns NULL if ndx is out ** of bounds or there is no "json" path element. ** ** In CLI mode the "path" is the list of arguments (skipping argv[0]). ** In server/CGI modes the path is taken from PATH_INFO. ** ** The returned bytes are owned by g.json.cmd.v and _may_ be ** invalidated if that object is modified (depending on how it is ** modified). ** ** Note that CLI options are not included in the command path. Use ** find_option() to get those. ** */ char const * json_command_arg(unsigned char ndx){ cson_array * ar = g.json.cmd.a; assert((NULL!=ar) && "Internal error. Was json_mode_bootstrap() called?"); assert((g.argc>1) && "Internal error - we never should have gotten this far."); if( g.json.cmd.offset < 0 ){ /* first-time setup. */ short i = 0; #define NEXT cson_string_cstr( \ cson_value_get_string( \ cson_array_get(ar,i) \ )) char const * tok = NEXT; while( tok ){ if( !g.isHTTP/*workaround for "abbreviated name" in CLI mode*/ ? (0==strcmp(g.argv[1],tok)) : (0==strncmp("json",tok,4)) ){ g.json.cmd.offset = i; break; } ++i; tok = NEXT; } } #undef NEXT if(g.json.cmd.offset < 0){ return NULL; }else{ ndx = g.json.cmd.offset + ndx; return cson_string_cstr(cson_value_get_string(cson_array_get( ar, g.json.cmd.offset + ndx ))); } } /* ** If g.json.reqPayload.o is NULL then NULL is returned, else the ** given property is searched for in the request payload. If found it ** is returned. The returned value is owned by (or shares ownership ** with) g.json, and must NOT be cson_value_free()'d by the ** caller. */ cson_value * json_payload_property( char const * key ){ return g.json.reqPayload.o ? cson_object_get( g.json.reqPayload.o, key ) : NULL; } /* Returns the C-string form of json_auth_token(), or NULL ** if json_auth_token() returns NULL. */ char const * json_auth_token_cstr(){ return cson_value_get_cstr( json_auth_token() ); } /* ** Returns the JsonPageDef with the given name, or NULL if no match is ** found. ** ** head must be a pointer to an array of JsonPageDefs in which the ** last entry has a NULL name. */ JsonPageDef const * json_handler_for_name( char const * name, JsonPageDef const * head ){ JsonPageDef const * pageDef = head; assert( head != NULL ); if(name && *name) for( ; pageDef->name; ++pageDef ){ if( 0 == strcmp(name, pageDef->name) ){ return pageDef; } } return NULL; } /* ** Given a Fossil/JSON result code, this function "dumbs it down" ** according to the current value of g.json.errorDetailParanoia. The ** dumbed-down value is returned. ** ** This function assert()s that code is in the inclusive range 0 to ** 9999. ** ** Note that WARNING codes (1..999) are never dumbed down. ** */ static int json_dumbdown_rc( int code ){ if(!g.json.errorDetailParanoia || !code || ((code>=FSL_JSON_W_START) && (code<FSL_JSON_W_END))){ return code; }else{ int modulo = 0; assert((code >= 1000) && (code <= 9999) && "Invalid Fossil/JSON code."); switch( g.json.errorDetailParanoia ){ case 1: modulo = 10; break; case 2: modulo = 100; break; case 3: modulo = 1000; break; default: break; } if( modulo ) code = code - (code % modulo); return code; } } /* ** Convenience routine which converts a Julian time value into a Unix ** Epoch timestamp. Requires the db, so this cannot be used before the ** repo is opened (will trigger a fatal error in db_xxx()). */ cson_value * json_julian_to_timestamp(double j){ return cson_value_new_integer((cson_int_t) db_int64(0,"SELECT cast(strftime('%%s',%lf) as int)",j) ); } /* ** Returns a timestamp value. */ cson_int_t json_timestamp(){ return (cson_int_t)time(0); } /* ** Returns a new JSON value (owned by the caller) representing ** a timestamp. If timeVal is < 0 then time(0) is used to fetch ** the time, else timeVal is used as-is */ cson_value * json_new_timestamp(cson_int_t timeVal){ return cson_value_new_integer((timeVal<0) ? (cson_int_t)time(0) : timeVal); } /* ** Internal helper for json_create_response(). Appends the first ** g.json.dispatchDepth elements of g.json.cmd.a, skipping the first ** one (the "json" part), to a string and returns that string value ** (which is owned by the caller). */ static cson_value * json_response_command_path(){ if(!g.json.cmd.a){ return NULL; }else{ cson_value * rc = NULL; Blob path = empty_blob; char const * part; unsigned int aLen = g.json.dispatchDepth+1; /*cson_array_length_get(g.json.cmd.a);*/ unsigned int i = 1; for( ; i < aLen; ++i ){ char const * part = cson_string_cstr(cson_value_get_string(cson_array_get(g.json.cmd.a, i))); if(!part){ fossil_warning("Iterating further than expected in %s.", __FILE__); break; } blob_appendf(&path,"%s%s", (i>1 ? "/": ""), part); } rc = json_new_string((blob_size(&path)>0) ? blob_buffer(&path) : "") /* reminder; we need an empty string instead of NULL in this case, to avoid what outwardly looks like (but is not) an allocation error in json_create_response(). */ ; blob_reset(&path); return rc; } } /* ** Returns a JSON Object representation of the global g object. ** Returned value is owned by the caller. */ cson_value * json_g_to_json(){ cson_object * o = NULL; cson_object * pay = NULL; pay = o = cson_new_object(); #define INT(OBJ,K) cson_object_set(o, #K, json_new_int(OBJ.K)) #define CSTR(OBJ,K) cson_object_set(o, #K, OBJ.K ? json_new_string(OBJ.K) : cson_value_null()) #define VAL(K,V) cson_object_set(o, #K, (V) ? (V) : cson_value_null()) VAL(capabilities, json_cap_value()); INT(g, argc); INT(g, isConst); INT(g, useAttach); INT(g, configOpen); INT(g, repositoryOpen); INT(g, localOpen); INT(g, minPrefix); INT(g, fSqlTrace); INT(g, fSqlStats); INT(g, fSqlPrint); INT(g, fQuiet); INT(g, fHttpTrace); INT(g, fSystemTrace); INT(g, fNoSync); INT(g, iErrPriority); INT(g, sslNotAvailable); INT(g, cgiOutput); INT(g, xferPanic); INT(g, fullHttpReply); INT(g, xlinkClusterOnly); INT(g, fTimeFormat); INT(g, markPrivate); INT(g, clockSkewSeen); INT(g, isHTTP); INT(g, urlIsFile); INT(g, urlIsHttps); INT(g, urlIsSsh); INT(g, urlPort); INT(g, urlDfltPort); INT(g, dontKeepUrl); INT(g, useLocalauth); INT(g, noPswd); INT(g, userUid); INT(g, rcvid); INT(g, okCsrf); INT(g, thTrace); INT(g, isHome); INT(g, nAux); INT(g, allowSymlinks); CSTR(g, zMainDbType); CSTR(g, zHome); CSTR(g, zLocalRoot); CSTR(g, zPath); CSTR(g, zExtra); CSTR(g, zBaseURL); CSTR(g, zTop); CSTR(g, zContentType); CSTR(g, zErrMsg); CSTR(g, urlName); CSTR(g, urlHostname); CSTR(g, urlProtocol); CSTR(g, urlPath); CSTR(g, urlUser); CSTR(g, urlPasswd); CSTR(g, urlCanonical); CSTR(g, urlProxyAuth); CSTR(g, urlFossil); CSTR(g, zLogin); CSTR(g, zSSLIdentity); CSTR(g, zIpAddr); CSTR(g, zNonce); CSTR(g, zCsrfToken); o = cson_new_object(); cson_object_set(pay, "json", cson_object_value(o) ); INT(g.json, isJsonMode); INT(g.json, resultCode); INT(g.json, errorDetailParanoia); INT(g.json, dispatchDepth); VAL(authToken, g.json.authToken); CSTR(g.json, jsonp); VAL(gc, g.json.gc.v); VAL(cmd, g.json.cmd.v); VAL(param, g.json.param.v); VAL(POST, g.json.post.v); VAL(warnings, g.json.warnings.v); /*cson_output_opt outOpt;*/ #undef INT #undef CSTR #undef VAL return cson_object_value(pay); } /* ** Creates a new Fossil/JSON response envelope skeleton. It is owned ** by the caller, who must eventually free it using cson_value_free(), ** or add it to a cson container to transfer ownership. Returns NULL ** on error. ** ** If payload is not NULL and resultCode is 0 then it is set as the ** "payload" property of the returned object. If resultCode is ** non-zero and payload is not NULL then this function calls ** cson_value_free(payload) and does not insert the payload into the ** response. In either case, onwership of payload is transfered to (or ** shared with, if the caller holds a reference) this function. ** ** pMsg is an optional message string property (resultText) of the ** response. If resultCode is non-0 and pMsg is NULL then ** json_err_cstr() is used to get the error string. The caller may ** provide his own or may use an empty string to suppress the ** resultText property. ** */ cson_value * json_create_response( int resultCode, char const * pMsg, cson_value * payload){ cson_value * v = NULL; cson_value * tmp = NULL; cson_object * o = NULL; int rc; resultCode = json_dumbdown_rc(resultCode); o = cson_new_object(); v = cson_object_value(o); if( ! o ) return NULL; #define SET(K) if(!tmp) goto cleanup; \ rc = cson_object_set( o, K, tmp ); \ if(rc) do{\ cson_value_free(tmp); \ tmp = NULL; \ goto cleanup; \ }while(0) tmp = cson_value_new_string(MANIFEST_UUID,strlen(MANIFEST_UUID)); SET("fossil"); tmp = json_new_timestamp(-1); SET(FossilJsonKeys.timestamp); if( 0 != resultCode ){ if( ! pMsg ){ pMsg = g.zErrMsg; if(!pMsg){ pMsg = json_err_cstr(resultCode); } } tmp = json_new_string(json_rc_cstr(resultCode)); SET(FossilJsonKeys.resultCode); } if( pMsg && *pMsg ){ tmp = json_new_string(pMsg); SET(FossilJsonKeys.resultText); } if(g.json.cmd.commandStr){ tmp = json_new_string(g.json.cmd.commandStr); }else{ tmp = json_response_command_path(); } SET("command"); tmp = json_getenv(FossilJsonKeys.requestId); if( tmp ) cson_object_set( o, FossilJsonKeys.requestId, tmp ); if(0){/* these are only intended for my own testing...*/ if(g.json.cmd.v){ tmp = g.json.cmd.v; SET("$commandPath"); } if(g.json.param.v){ tmp = g.json.param.v; SET("$params"); } if(0){/*Only for debuggering, add some info to the response.*/ tmp = cson_value_new_integer( g.json.cmd.offset ); cson_object_set( o, "cmd.offset", tmp ); cson_object_set( o, "isCGI", cson_value_new_bool( g.isHTTP ) ); } } if(HAS_TIMER){ /* This is, philosophically speaking, not quite the right place for ending the timer, but this is the one function which all of the JSON exit paths use (and they call it after processing, just before they end). */ double span; span = END_TIMER; /* i'm actually seeing sub-ms runtimes in some tests, but a time of 0 is "just wrong", so we'll bump that up to 1ms. */ cson_object_set(o,"procTimeMs", cson_value_new_integer((cson_int_t)((span>1.0)?span:1))); } if(g.json.warnings.v){ tmp = g.json.warnings.v; SET("warnings"); } /* Only add the payload to SUCCESS responses. Else delete it. */ if( NULL != payload ){ if( resultCode ){ cson_value_free(payload); payload = NULL; }else{ tmp = payload; SET(FossilJsonKeys.payload); } } if(json_find_option_bool("debugFossilG","json-debug-g",NULL,0) &&(g.perm.Admin||g.perm.Setup)){ tmp = json_g_to_json(); SET("g"); } #undef SET goto ok; cleanup: cson_value_free(v); v = NULL; ok: return v; } /* ** Outputs a JSON error response to either the cgi_xxx() family of ** buffers (in CGI/server mode) or stdout (in CLI mode). If rc is 0 ** then g.json.resultCode is used. If that is also 0 then the "Unknown ** Error" code is used. ** ** If g.isHTTP then the generated JSON error response object replaces ** any currently buffered page output. Because the output goes via ** the cgi_xxx() family of functions, this function inherits any ** compression which fossil does for its output. ** ** If alsoOutput is true AND g.isHTTP then cgi_reply() is called to ** flush the output (and headers). Generally only do this if you are ** about to call exit(). ** ** !g.isHTTP then alsoOutput is ignored and all output is sent to ** stdout immediately. ** ** For generating the resultText property: if msg is not NULL then it ** is used as-is. If it is NULL then g.zErrMsg is checked, and if that ** is NULL then json_err_cstr(code) is used. */ void json_err( int code, char const * msg, char alsoOutput ){ int rc = code ? code : (g.json.resultCode ? g.json.resultCode : FSL_JSON_E_UNKNOWN); cson_value * resp = NULL; rc = json_dumbdown_rc(rc); if( rc && !msg ){ msg = g.zErrMsg; if(!msg){ msg = json_err_cstr(rc); } } resp = json_create_response(rc, msg, NULL); if(!resp){ /* about the only error case here is out-of-memory. DO NOT call fossil_panic() here because that calls this function. */ fprintf(stderr, "%s: Fatal error: could not allocate " "response object.\n", fossil_nameofexe()); fossil_exit(1); } if( g.isHTTP ){ if(alsoOutput){ json_send_response(resp); }else{ /* almost a duplicate of json_send_response() :( */ cgi_reset_content(); if( g.json.jsonp ){ cgi_printf("%s(",g.json.jsonp); } cson_output( resp, cson_data_dest_cgi, NULL, &g.json.outOpt ); if( g.json.jsonp ){ cgi_append_content(")",1); } } }else{ json_send_response(resp); } cson_value_free(resp); } /* ** Sets g.json.resultCode and g.zErrMsg, but does not report the error ** via json_err(). Returns the code passed to it. ** ** code must be in the inclusive range 1000..9999. */ int json_set_err( int code, char const * fmt, ... ){ assert( (code>=1000) && (code<=9999) ); free(g.zErrMsg); g.json.resultCode = code; if(!fmt || !*fmt){ g.zErrMsg = mprintf("%s", json_err_cstr(code)); }else{ va_list vargs; va_start(vargs,fmt); char * msg = vmprintf(fmt, vargs); va_end(vargs); g.zErrMsg = msg; } return code; } /* ** Iterates through a prepared SELECT statement and converts each row ** to a JSON object. If pTgt is not NULL then this function will ** append the results to pTgt and return cson_array_value(pTgt). If ** pTgt is NULL then a new Array object is created and returned (owned ** by the caller). Each row of pStmt is converted to an Object and ** appended to the array. If the result set has no rows AND pTgt is ** NULL then NULL (not an empty array) is returned. */ cson_value * json_stmt_to_array_of_obj(Stmt *pStmt, cson_array * pTgt){ cson_array * a = pTgt; char const * warnMsg = NULL; cson_value * colNamesV = NULL; cson_array * colNames = NULL; while( (SQLITE_ROW==db_step(pStmt)) ){ cson_value * row = NULL; if(!a){ a = cson_new_array(); assert(NULL!=a); } if(!colNames){ colNamesV = cson_sqlite3_column_names(pStmt->pStmt); assert(NULL != colNamesV); cson_value_add_reference(colNamesV); colNames = cson_value_get_array(colNamesV); assert(NULL != colNames); } row = cson_sqlite3_row_to_object2(pStmt->pStmt, colNames); if(!row && !warnMsg){ warnMsg = "Could not convert at least one result row to JSON."; continue; } if( 0 != cson_array_append(a, row) ){ cson_value_free(row); assert( 0 && "Alloc error."); if(pTgt != a) { cson_free_array(a); } return NULL; } } cson_value_free(colNamesV); if(warnMsg){ json_warn( FSL_JSON_W_ROW_TO_JSON_FAILED, warnMsg ); } return cson_array_value(a); } /* ** Works just like json_stmt_to_array_of_obj(), but each row in the ** result set is represented as an Array of values instead of an ** Object (key/value pairs). If pTgt is NULL and the statement ** has no results then NULL is returned, not an empty array. */ cson_value * json_stmt_to_array_of_array(Stmt *pStmt, cson_array * pTgt){ cson_array * a = pTgt; while( (SQLITE_ROW==db_step(pStmt)) ){ cson_value * row = NULL; if(!a){ a = cson_new_array(); assert(NULL!=a); } row = cson_sqlite3_row_to_array(pStmt->pStmt); cson_array_append(a, row); } return cson_array_value(a); } /* ** Executes the given SQL and runs it through ** json_stmt_to_array_of_obj(), returning the result of that ** function. If resetBlob is true then blob_reset(pSql) is called ** after preparing the query. ** ** pTgt has the same semantics as described for ** json_stmt_to_array_of_obj(). */ cson_value * json_sql_to_array_of_obj(Blob * pSql, cson_array * pTgt, char resetBlob){ Stmt q = empty_Stmt; cson_value * pay = NULL; assert( blob_size(pSql) > 0 ); db_prepare(&q, "%s", blob_str(pSql)); if(resetBlob){ blob_reset(pSql); } pay = json_stmt_to_array_of_obj(&q, pTgt); db_finalize(&q); return pay; } /* ** If the given rid has any tags associated with it, this function ** returns a JSON Array containing the tag names, else it returns ** NULL. ** ** See info_tags_of_checkin() for more details (this is simply a JSON ** wrapper for that function). */ cson_value * json_tags_for_rid(int rid, char propagatingOnly){ cson_value * v = NULL; char * tags = info_tags_of_checkin(rid, propagatingOnly); if(tags){ if(*tags){ v = json_string_split2(tags,',',0); } free(tags); } return v; } /* ** Returns a "new" value representing the boolean value of zVal ** (false if zVal is NULL). Note that cson does not really allocate ** any memory for boolean values, but they "should" (for reasons of ** style and philosophy) be cleaned up like any other values (but ** it's a no-op for bools). */ cson_value * json_value_to_bool(cson_value const * zVal){ return cson_value_get_bool(zVal) ? cson_value_true() : cson_value_false(); } /* ** Impl of /json/resultCodes ** */ cson_value * json_page_resultCodes(){ cson_value * listV = cson_value_new_array(); cson_array * list = cson_value_get_array(listV); cson_value * objV = NULL; cson_object * obj = NULL; cson_string * kRC; cson_string * kSymbol; cson_string * kNumber; cson_string * kDesc; int rc = cson_array_reserve( list, 35 ); if(rc){ assert( 0 && "Allocation error."); exit(1); } kRC = cson_new_string("resultCode",10); kSymbol = cson_new_string("cSymbol",7); kNumber = cson_new_string("number",6); kDesc = cson_new_string("description",11); #define C(K) objV = cson_value_new_object(); obj = cson_value_get_object(objV); \ cson_object_set_s(obj, kRC, json_new_string(json_rc_cstr(FSL_JSON_E_##K)) ); \ cson_object_set_s(obj, kSymbol, json_new_string("FSL_JSON_E_"#K) ); \ cson_object_set_s(obj, kNumber, cson_value_new_integer(FSL_JSON_E_##K) ); \ cson_object_set_s(obj, kDesc, json_new_string(json_err_cstr(FSL_JSON_E_##K))); \ cson_array_append( list, objV ); obj = NULL; objV = NULL C(GENERIC); C(INVALID_REQUEST); C(UNKNOWN_COMMAND); C(UNKNOWN); C(TIMEOUT); C(ASSERT); C(ALLOC); C(NYI); C(PANIC); C(MANIFEST_READ_FAILED); C(FILE_OPEN_FAILED); C(AUTH); C(MISSING_AUTH); C(DENIED); C(WRONG_MODE); C(LOGIN_FAILED); C(LOGIN_FAILED_NOSEED); C(LOGIN_FAILED_NONAME); C(LOGIN_FAILED_NOPW); C(LOGIN_FAILED_NOTFOUND); C(USAGE); C(INVALID_ARGS); C(MISSING_ARGS); C(AMBIGUOUS_UUID); C(UNRESOLVED_UUID); C(RESOURCE_ALREADY_EXISTS); C(RESOURCE_NOT_FOUND); C(DB); C(STMT_PREP); C(STMT_BIND); C(STMT_EXEC); C(DB_LOCKED); C(DB_NEEDS_REBUILD); C(DB_NOT_FOUND); C(DB_NOT_VALID); #undef C return listV; } /* ** /json/version implementation. ** ** Returns the payload object (owned by the caller). */ cson_value * json_page_version(){ cson_value * jval = NULL; cson_object * jobj = NULL; jval = cson_value_new_object(); jobj = cson_value_get_object(jval); #define FSET(X,K) cson_object_set( jobj, K, cson_value_new_string(X,strlen(X))) FSET(MANIFEST_UUID,"manifestUuid"); FSET(MANIFEST_VERSION,"manifestVersion"); FSET(MANIFEST_DATE,"manifestDate"); FSET(MANIFEST_YEAR,"manifestYear"); FSET(RELEASE_VERSION,"releaseVersion"); #undef FSET cson_object_set( jobj, "releaseVersionNumber", cson_value_new_integer(RELEASE_VERSION_NUMBER) ); cson_object_set( jobj, "resultCodeParanoiaLevel", cson_value_new_integer(g.json.errorDetailParanoia) ); return jval; } /* ** Returns the current user's capabilities string as a String value. ** Returned value is owned by the caller, and will only be NULL if ** g.userUid is invalid or an out of memory error. Or, it turns out, ** in CLI mode (where there is no logged-in user). */ cson_value * json_cap_value(){ if(g.userUid<=0){ return NULL; }else{ Stmt q = empty_Stmt; cson_value * val = NULL; db_prepare(&q, "SELECT cap FROM user WHERE uid=%d", g.userUid); if( db_step(&q)==SQLITE_ROW ){ char const * str = (char const *)sqlite3_column_text(q.pStmt,0); if( str ){ val = json_new_string(str); } } db_finalize(&q); return val; } } /* ** Implementation for /json/cap ** ** Returned object contains details about the "capabilities" of the ** current user (what he may/may not do). ** ** This is primarily intended for debuggering, but may have ** a use in client code. (?) */ cson_value * json_page_cap(){ cson_value * payload = cson_value_new_object(); cson_value * sub = cson_value_new_object(); Stmt q; cson_object * obj = cson_value_get_object(payload); db_prepare(&q, "SELECT login, cap FROM user WHERE uid=%d", g.userUid); if( db_step(&q)==SQLITE_ROW ){ /* reminder: we don't use g.zLogin because it's 0 for the guest user and the HTML UI appears to currently allow the name to be changed (but doing so would break other code). */ char const * str = (char const *)sqlite3_column_text(q.pStmt,0); if( str ){ cson_object_set( obj, "name", cson_value_new_string(str,strlen(str)) ); } str = (char const *)sqlite3_column_text(q.pStmt,1); if( str ){ cson_object_set( obj, "capabilities", cson_value_new_string(str,strlen(str)) ); } } db_finalize(&q); cson_object_set( obj, "permissionFlags", sub ); obj = cson_value_get_object(sub); #define ADD(X,K) cson_object_set(obj, K, cson_value_new_bool(g.perm.X)) ADD(Setup,"setup"); ADD(Admin,"admin"); ADD(Delete,"delete"); ADD(Password,"password"); ADD(Query,"query"); /* don't think this one is actually used */ ADD(Write,"checkin"); ADD(Read,"checkout"); ADD(History,"history"); ADD(Clone,"clone"); ADD(RdWiki,"readWiki"); ADD(NewWiki,"createWiki"); ADD(ApndWiki,"appendWiki"); ADD(WrWiki,"editWiki"); ADD(RdTkt,"readTicket"); ADD(NewTkt,"createTicket"); ADD(ApndTkt,"appendTicket"); ADD(WrTkt,"editTicket"); ADD(Attach,"attachFile"); ADD(TktFmt,"createTicketReport"); ADD(RdAddr,"readPrivate"); ADD(Zip,"zip"); ADD(Private,"xferPrivate"); #undef ADD return payload; } /* ** Implementation of the /json/stat page/command. ** */ cson_value * json_page_stat(){ i64 t, fsize; int n, m; int full; const char *zDb; enum { BufLen = 1000 }; char zBuf[BufLen]; cson_value * jv = NULL; cson_object * jo = NULL; cson_value * jv2 = NULL; cson_object * jo2 = NULL; if( !g.perm.Read ){ json_set_err(FSL_JSON_E_DENIED, "Requires 'o' permissions."); return NULL; } full = json_find_option_bool("full",NULL,"f",0); #define SETBUF(O,K) cson_object_set(O, K, cson_value_new_string(zBuf, strlen(zBuf))); jv = cson_value_new_object(); jo = cson_value_get_object(jv); sqlite3_snprintf(BufLen, zBuf, db_get("project-name","")); SETBUF(jo, "projectName"); /* FIXME: don't include project-description until we ensure that zBuf will always be big enough. We "should" replace zBuf with a blob for this purpose. */ fsize = file_size(g.zRepositoryName); cson_object_set(jo, "repositorySize", cson_value_new_integer((cson_int_t)fsize)); if(full){ n = db_int(0, "SELECT count(*) FROM blob"); m = db_int(0, "SELECT count(*) FROM delta"); cson_object_set(jo, "blobCount", cson_value_new_integer((cson_int_t)n)); cson_object_set(jo, "deltaCount", cson_value_new_integer((cson_int_t)m)); if( n>0 ){ int a, b; Stmt q; db_prepare(&q, "SELECT total(size), avg(size), max(size)" " FROM blob WHERE size>0"); db_step(&q); t = db_column_int64(&q, 0); cson_object_set(jo, "uncompressedArtifactSize", cson_value_new_integer((cson_int_t)t)); cson_object_set(jo, "averageArtifactSize", cson_value_new_integer((cson_int_t)db_column_int(&q, 1))); cson_object_set(jo, "maxArtifactSize", cson_value_new_integer((cson_int_t)db_column_int(&q, 2))); db_finalize(&q); if( t/fsize < 5 ){ b = 10; fsize /= 10; }else{ b = 1; } a = t/fsize; sqlite3_snprintf(BufLen,zBuf, "%d:%d", a, b); SETBUF(jo, "compressionRatio"); } n = db_int(0, "SELECT count(distinct mid) FROM mlink /*scan*/"); cson_object_set(jo, "checkinCount", cson_value_new_integer((cson_int_t)n)); n = db_int(0, "SELECT count(*) FROM filename /*scan*/"); cson_object_set(jo, "fileCount", cson_value_new_integer((cson_int_t)n)); n = db_int(0, "SELECT count(*) FROM tag /*scan*/" " WHERE +tagname GLOB 'wiki-*'"); cson_object_set(jo, "wikiPageCount", cson_value_new_integer((cson_int_t)n)); n = db_int(0, "SELECT count(*) FROM tag /*scan*/" " WHERE +tagname GLOB 'tkt-*'"); cson_object_set(jo, "ticketCount", cson_value_new_integer((cson_int_t)n)); }/*full*/ n = db_int(0, "SELECT julianday('now') - (SELECT min(mtime) FROM event)" " + 0.99"); cson_object_set(jo, "ageDays", cson_value_new_integer((cson_int_t)n)); cson_object_set(jo, "ageYears", cson_value_new_double(n/365.24)); sqlite3_snprintf(BufLen, zBuf, db_get("project-code","")); SETBUF(jo, "projectCode"); sqlite3_snprintf(BufLen, zBuf, db_get("server-code","")); SETBUF(jo, "serverCode"); cson_object_set(jo, "compiler", cson_value_new_string(COMPILER_NAME, strlen(COMPILER_NAME))); jv2 = cson_value_new_object(); jo2 = cson_value_get_object(jv2); cson_object_set(jo, "sqlite", jv2); sqlite3_snprintf(BufLen, zBuf, "%.19s [%.10s] (%s)", SQLITE_SOURCE_ID, &SQLITE_SOURCE_ID[20], SQLITE_VERSION); SETBUF(jo2, "version"); zDb = db_name("repository"); cson_object_set(jo2, "pageCount", cson_value_new_integer((cson_int_t)db_int(0, "PRAGMA %s.page_count", zDb))); cson_object_set(jo2, "pageSize", cson_value_new_integer((cson_int_t)db_int(0, "PRAGMA %s.page_size", zDb))); cson_object_set(jo2, "freeList", cson_value_new_integer((cson_int_t)db_int(0, "PRAGMA %s.freelist_count", zDb))); sqlite3_snprintf(BufLen, zBuf, "%s", db_text(0, "PRAGMA %s.encoding", zDb)); SETBUF(jo2, "encoding"); sqlite3_snprintf(BufLen, zBuf, "%s", db_text(0, "PRAGMA %s.journal_mode", zDb)); cson_object_set(jo2, "journalMode", *zBuf ? cson_value_new_string(zBuf, strlen(zBuf)) : cson_value_null()); return jv; #undef SETBUF } /* ** Creates a comma-separated list of command names ** taken from zPages. zPages must be an array of objects ** whose final entry MUST have a NULL name value or results ** are undefined. ** ** The list is appended to pOut. The number of items (not bytes) ** appended are returned. */ static int json_pagedefs_to_string(JsonPageDef const * zPages, Blob * pOut){ int i = 0; for( ; zPages->name; ++zPages, ++i ){ if(g.isHTTP && zPages->runMode < 0) continue; else if(zPages->runMode > 0) continue; blob_appendf(pOut, zPages->name, -1); if((zPages+1)->name){ blob_append(pOut, ", ",2); } } return i; } cson_value * json_page_dispatch_helper(JsonPageDef const * pages){ JsonPageDef const * def; char const * cmd = json_command_arg(1+g.json.dispatchDepth); assert( NULL != pages ); if( ! cmd ){ Blob cmdNames = empty_blob; json_pagedefs_to_string(pages, &cmdNames); json_set_err(FSL_JSON_E_MISSING_ARGS, "No subcommand specified. Try one of (%s).", blob_str(&cmdNames)); blob_reset(&cmdNames); return NULL; } def = json_handler_for_name( cmd, pages ); if(!def){ g.json.resultCode = FSL_JSON_E_UNKNOWN_COMMAND; return NULL; } else{ ++g.json.dispatchDepth; return (*def->func)(); } } /* ** Impl of /json/rebuild. Requires admin previleges. */ static cson_value * json_page_rebuild(){ if( !g.perm.Admin ){ json_set_err(FSL_JSON_E_DENIED,"Requires 'a' privileges."); return NULL; }else{ /* Reminder: the db_xxx() ops "should" fail via the fossil core error handlers, which will cause a JSON error and exit(). i.e. we don't handle the errors here. TODO: confirm that all these db routine fail gracefully in JSON mode. On large repos (e.g. fossil's) this operation is likely to take longer than the client timeout, which will cause it to fail (but it's sqlite3, so it'll fail gracefully). */ db_close(1); db_open_repository(g.zRepositoryName); db_begin_transaction(); rebuild_db(0, 0, 0); db_end_transaction(0); return NULL; } } /* ** Impl of /json/g. Requires admin/setup rights. */ static cson_value * json_page_g(){ if(!g.perm.Admin || !g.perm.Setup){ json_set_err(FSL_JSON_E_DENIED, "Requires 'a' or 's' privileges."); return NULL; } return json_g_to_json(); } /* Impl in json_login.c. */ cson_value * json_page_anon_password(); /* Impl in json_artifact.c. */ cson_value * json_page_artifact(); /* Impl in json_branch.c. */ cson_value * json_page_branch(); /* Impl in json_diff.c. */ cson_value * json_page_diff(); /* Impl in json_login.c. */ cson_value * json_page_login(); /* Impl in json_login.c. */ cson_value * json_page_logout(); /* Impl in json_query.c. */ cson_value * json_page_query(); /* Impl in json_report.c. */ cson_value * json_page_report(); /* Impl in json_tag.c. */ cson_value * json_page_tag(); /* Impl in json_user.c. */ cson_value * json_page_user(); /* ** Mapping of names to JSON pages/commands. Each name is a subpath of ** /json (in CGI mode) or a subcommand of the json command in CLI mode */ static const JsonPageDef JsonPageDefs[] = { /* please keep alphabetically sorted (case-insensitive) for maintenance reasons. */ {"anonymousPassword", json_page_anon_password, 1}, {"artifact", json_page_artifact, 0}, {"branch", json_page_branch,0}, {"cap", json_page_cap, 0}, {"diff", json_page_diff, 0}, {"dir", json_page_nyi, 0}, {"g", json_page_g, 0}, {"HAI",json_page_version,0}, {"login",json_page_login,1}, {"logout",json_page_logout,1}, {"query",json_page_query,0}, {"rebuild",json_page_rebuild,0}, {"report", json_page_report, 0}, {"resultCodes", json_page_resultCodes,0}, {"stat",json_page_stat,0}, {"tag", json_page_tag,0}, {"ticket", json_page_nyi,0}, {"timeline", json_page_timeline,0}, {"user",json_page_user,0}, {"version",json_page_version,0}, {"whoami",json_page_whoami,0/*FIXME: work in CLI mode*/}, {"wiki",json_page_wiki,0}, /* Last entry MUST have a NULL name. */ {NULL,NULL,0} }; /* ** Mapping of /json/ticket/XXX commands/paths to callbacks. */ static const JsonPageDef JsonPageDefs_Ticket[] = { {"get", json_page_nyi, 0}, {"list", json_page_nyi, 0}, {"save", json_page_nyi, 1}, {"create", json_page_nyi, 1}, /* Last entry MUST have a NULL name. */ {NULL,NULL,0} }; /* ** Mapping of /json/artifact/XXX commands/paths to callbacks. */ static const JsonPageDef JsonPageDefs_Artifact[] = { {"vinfo", json_page_nyi, 0}, {"finfo", json_page_nyi, 0}, /* Last entry MUST have a NULL name. */ {NULL,NULL,0} }; /* ** Mapping of /json/tag/XXX commands/paths to callbacks. */ static const JsonPageDef JsonPageDefs_Tag[] = { {"list", json_page_nyi, 0}, {"create", json_page_nyi, 1}, /* Last entry MUST have a NULL name. */ {NULL,NULL,0} }; #ifdef FOSSIL_ENABLE_JSON /* dupe ifdef needed for mkindex */ /* ** WEBPAGE: json ** ** Pages under /json/... must be entered into JsonPageDefs. ** This function dispatches them, and is the HTTP equivalent of ** json_cmd_top(). */ void json_page_top(void){ int rc = FSL_JSON_E_UNKNOWN_COMMAND; char const * cmd; cson_value * payload = NULL; JsonPageDef const * pageDef = NULL; BEGIN_TIMER; json_mode_bootstrap(); cmd = json_command_arg(1); if(!cmd || !*cmd){ goto usage; } /*cgi_printf("{\"cmd\":\"%s\"}\n",cmd); return;*/ pageDef = json_handler_for_name(cmd,&JsonPageDefs[0]); if( ! pageDef ){ json_err( FSL_JSON_E_UNKNOWN_COMMAND, NULL, 0 ); return; }else if( pageDef->runMode < 0 /*CLI only*/){ rc = FSL_JSON_E_WRONG_MODE; }else{ rc = 0; g.json.dispatchDepth = 1; payload = (*pageDef->func)(); } if( g.json.resultCode ){ cson_value_free(payload); json_err(g.json.resultCode, NULL, 0); }else{ cson_value * root = json_create_response(rc, NULL, payload); json_send_response(root); cson_value_free(root); } return; usage: { Blob cmdNames = empty_blob; blob_init(&cmdNames, "No command (sub-path) specified. Try one of: ", -1); json_pagedefs_to_string(&JsonPageDefs[0], &cmdNames); json_err(FSL_JSON_E_MISSING_ARGS, blob_str(&cmdNames), 0); blob_reset(&cmdNames); } } #endif /* FOSSIL_ENABLE_JSON */ #ifdef FOSSIL_ENABLE_JSON /* dupe ifdef needed for mkindex */ /* ** This function dispatches json commands and is the CLI equivalent of ** json_page_top(). ** ** COMMAND: json ** ** Usage: %fossil json SUBCOMMAND ** ** The commands include: ** ** branch ** cap ** stat ** timeline ** version (alias: HAI) ** wiki ** ** ** TODOs: ** ** tag ** ticket ** ... ** */ void json_cmd_top(void){ char const * cmd = NULL; int rc = FSL_JSON_E_UNKNOWN_COMMAND; cson_value * payload = NULL; JsonPageDef const * pageDef; BEGIN_TIMER; memset( &g.perm, 0xff, sizeof(g.perm) ) /* In CLI mode fossil does not use permissions and they all default to false. We enable them here because (A) fossil doesn't use them in local mode but (B) having them set gives us one less difference in the CLI/CGI/Server-mode JSON handling. */ ; json_main_bootstrap(); json_mode_bootstrap(); if( 2 > cson_array_length_get(g.json.cmd.a) ){ goto usage; } db_find_and_open_repository(0, 0); #if 0 json_warn(FSL_JSON_W_ROW_TO_JSON_FAILED, "Just testing."); json_warn(FSL_JSON_W_ROW_TO_JSON_FAILED, "Just testing again."); #endif cmd = json_command_arg(1); if( !cmd || !*cmd ){ goto usage; } pageDef = json_handler_for_name(cmd,&JsonPageDefs[0]); if( ! pageDef ){ json_err( FSL_JSON_E_UNKNOWN_COMMAND, NULL, 1 ); return; }else if( pageDef->runMode > 0 /*HTTP only*/){ rc = FSL_JSON_E_WRONG_MODE; }else{ rc = 0; g.json.dispatchDepth = 1; payload = (*pageDef->func)(); } if( g.json.resultCode ){ cson_value_free(payload); json_err(g.json.resultCode, NULL, 1); }else{ payload = json_create_response(rc, NULL, payload); json_send_response(payload); cson_value_free( payload ); if((0 != rc) && !g.isHTTP){ /* FIXME: we need a way of passing this error back up to the routine which called this callback. e.g. add g.errCode. */ fossil_exit(1); } } return; usage: { Blob cmdNames = empty_blob; blob_init(&cmdNames, "No subcommand specified. Try one of: ", -1); json_pagedefs_to_string(&JsonPageDefs[0], &cmdNames); json_err(FSL_JSON_E_MISSING_ARGS, blob_str(&cmdNames), 1); blob_reset(&cmdNames); fossil_exit(1); } } #endif /* FOSSIL_ENABLE_JSON */ #undef BITSET_BYTEFOR #undef BITSET_SET #undef BITSET_UNSET #undef BITSET_GET #undef BITSET_TOGGLE #endif /* FOSSIL_ENABLE_JSON */ |
Added src/json_artifact.c.
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#ifdef FOSSIL_ENABLE_JSON /* ** Copyright (c) 2011 D. Richard Hipp ** ** This program is free software; you can redistribute it and/or ** modify it under the terms of the Simplified BSD License (also ** known as the "2-Clause License" or "FreeBSD License".) ** ** This program is distributed in the hope that it will be useful, ** but without any warranty; without even the implied warranty of ** merchantability or fitness for a particular purpose. ** ** Author contact information: ** drh@hwaci.com ** http://www.hwaci.com/drh/ ** */ #include "VERSION.h" #include "config.h" #include "json_artifact.h" #if INTERFACE #include "json_detail.h" #endif /* ** Internal callback for /json/artifact handlers. rid refers to ** the rid of a given type of artifact, and each callback is ** specialized to return a JSON form of one type of artifact. ** ** Implementations may assert() that rid refers to requested artifact ** type, since mismatches in the artifact types come from ** json_page_artifact() as opposed to client data. */ typedef cson_value * (*artifact_f)( int rid ); /* ** Internal per-artifact-type dispatching helper. */ typedef struct ArtifactDispatchEntry { /** Artifact type name, e.g. "checkin", "ticket", "wiki". */ char const * name; /** JSON construction callback. Creates the contents for the payload.artifact property of /json/artifact responses. */ artifact_f func; } ArtifactDispatchEntry; /* ** Generates an artifact Object for the given rid, ** which must refer to a Checkin. ** ** Returned value is NULL or an Object owned by the caller. */ cson_value * json_artifact_for_ci( int rid, char showFiles ){ char * zParent = NULL; cson_value * v = NULL; Stmt q; static cson_value * eventTypeLabel = NULL; if(!eventTypeLabel){ eventTypeLabel = json_new_string("checkin"); json_gc_add("$EVENT_TYPE_LABEL(commit)", eventTypeLabel); } zParent = db_text(0, "SELECT uuid FROM plink, blob" " WHERE plink.cid=%d AND blob.rid=plink.pid AND plink.isprim", rid ); db_prepare(&q, "SELECT uuid, " " cast(strftime('%%s',mtime) as int), " " user, " " comment," " strftime('%%s',omtime)" " FROM blob, event" " WHERE blob.rid=%d" " AND event.objid=%d", rid, rid ); if( db_step(&q)==SQLITE_ROW ){ cson_object * o; cson_value * tmpV = NULL; const char *zUuid = db_column_text(&q, 0); char * zTmp; const char *zUser; const char *zComment; char * zEUser, * zEComment; int mtime, omtime; v = cson_value_new_object(); o = cson_value_get_object(v); #define SET(K,V) cson_object_set(o,(K), (V)) SET("type", eventTypeLabel ); SET("uuid",json_new_string(zUuid)); SET("isLeaf", cson_value_new_bool(is_a_leaf(rid))); zUser = db_column_text(&q,2); zEUser = db_text(0, "SELECT value FROM tagxref WHERE tagid=%d AND rid=%d", TAG_USER, rid); if(zEUser){ SET("user", json_new_string(zEUser)); if(0!=strcmp(zEUser,zUser)){ SET("originUser",json_new_string(zUser)); } free(zEUser); }else{ SET("user",json_new_string(zUser)); } zComment = db_column_text(&q,3); zEComment = db_text(0, "SELECT value FROM tagxref WHERE tagid=%d AND rid=%d", TAG_COMMENT, rid); if(zEComment){ SET("comment",json_new_string(zEComment)); if(0 != strcmp(zEComment,zComment)){ SET("originComment", json_new_string(zComment)); } free(zEComment); }else{ SET("comment",json_new_string(zComment)); } mtime = db_column_int(&q,1); SET("mtime",json_new_int(mtime)); omtime = db_column_int(&q,4); if(omtime && (omtime!=mtime)){ SET("originTime",json_new_int(omtime)); } if(zParent){ SET("parentUuid", json_new_string(zParent)); } tmpV = json_tags_for_rid(rid,0); if(tmpV){ SET("tags",tmpV); } if( showFiles ){ cson_value * fileList = json_get_changed_files(rid); if(fileList){ SET("files",fileList); } } #undef SET } free(zParent); db_finalize(&q); return v; } /* ** Very incomplete/incorrect impl of /json/artifact/TICKET_ID. */ cson_value * json_artifact_ticket( int rid ){ cson_object * pay = NULL; Manifest *pTktChng = NULL; static cson_value * eventTypeLabel = NULL; if(! g.perm.RdTkt ){ g.json.resultCode = FSL_JSON_E_DENIED; return NULL; } if(!eventTypeLabel){ eventTypeLabel = json_new_string("ticket"); json_gc_add("$EVENT_TYPE_LABEL(ticket)", eventTypeLabel); } pTktChng = manifest_get(rid, CFTYPE_TICKET); if( pTktChng==0 ){ g.json.resultCode = FSL_JSON_E_MANIFEST_READ_FAILED; return NULL; } pay = cson_new_object(); cson_object_set(pay, "eventType", eventTypeLabel ); cson_object_set(pay, "uuid", json_new_string(pTktChng->zTicketUuid)); cson_object_set(pay, "user", json_new_string(pTktChng->zUser)); cson_object_set(pay, "timestamp", json_julian_to_timestamp(pTktChng->rDate)); manifest_destroy(pTktChng); return cson_object_value(pay); } /* ** Sub-impl of /json/artifact for checkins. */ static cson_value * json_artifact_ci( int rid ){ if(! g.perm.Read ){ g.json.resultCode = FSL_JSON_E_DENIED; return NULL; }else{ return json_artifact_for_ci(rid, 1); } } /* ** Internal mapping of /json/artifact/FOO commands/callbacks. */ static ArtifactDispatchEntry ArtifactDispatchList[] = { {"checkin", json_artifact_ci}, {"file", json_artifact_file}, {"tag", NULL}, {"ticket", json_artifact_ticket}, {"wiki", json_artifact_wiki}, /* Final entry MUST have a NULL name. */ {NULL,NULL} }; /* ** Internal helper which returns true (non-0) if the includeContent ** (HTTP) or -content|-c flags (CLI) are set. */ static char json_artifact_include_content_flag(){ return json_find_option_bool("includeContent","content","c",0); } cson_value * json_artifact_wiki(int rid){ if( ! g.perm.RdWiki ){ json_set_err(FSL_JSON_E_DENIED, "Requires 'j' privileges."); return NULL; }else{ return json_get_wiki_page_by_rid(rid, 0); } } cson_value * json_artifact_file(int rid){ cson_object * pay = NULL; const char *zMime; Blob content = empty_blob; Stmt q = empty_Stmt; cson_array * checkin_arr = NULL; #if 0 /*see next #if block below*/ cson_string * tagKey = NULL; cson_value * checkinV = NULL; cson_object * checkin = NULL; #endif if( ! g.perm.Read ){ json_set_err(FSL_JSON_E_DENIED, "Requires 'o' privileges."); return NULL; } pay = cson_new_object(); content_get(rid, &content); cson_object_set(pay, "contentLength", json_new_int( blob_size(&content) ) /* achtung: overflow potential on 32-bit builds! */); zMime = mimetype_from_content(&content); cson_object_set(pay, "contentType", json_new_string(zMime ? zMime : "text/plain")); if( json_artifact_include_content_flag() && !zMime ){ cson_object_set(pay, "content", cson_value_new_string(blob_str(&content), (unsigned int)blob_size(&content))); } blob_reset(&content); db_prepare(&q, "SELECT filename.name AS name, " " cast(strftime('%%s',event.mtime) as int) AS mtime," " coalesce(event.ecomment,event.comment) as comment," " coalesce(event.euser,event.user) as user," " b.uuid as uuid, mlink.mperm as mperm,"/* WTF is mperm?*/ " coalesce((SELECT value FROM tagxref" " WHERE tagid=%d AND tagtype>0 AND rid=mlink.mid),'trunk') as branch" " FROM mlink, filename, event, blob a, blob b" " WHERE filename.fnid=mlink.fnid" " AND event.objid=mlink.mid" " AND a.rid=mlink.fid" " AND b.rid=mlink.mid" " AND mlink.fid=%d" " ORDER BY filename.name, event.mtime", TAG_BRANCH, rid ); checkin_arr = cson_new_array(); cson_object_set(pay, "checkins", cson_array_value(checkin_arr)); #if 0 /* Damn: json_tags_for_rid() only works for commits. FIXME: extend json_tags_for_rid() to accept file rids and then implement this loop to add the tags to each object. */ while( SQLITE_ROW == db_step(&q) ){ checkinV = cson_sqlite3_row_to_object( q.pStmt ); if(!checkinV){ continue; } if(!tagKey) { tagKey = cson_new_string("tags",4); json_gc_add("artifact/file/tags", cson_string_value(tagKey)) /*avoids a potential lifetime issue*/; } checkin = cson_value_get_object(checkinV); cson_object_set_s(checkin, tagKey, json_tags_for_rid(rid,0)); cson_array_append( checkin_arr, checkinV ); } #else json_stmt_to_array_of_obj( &q, checkin_arr ); #endif db_finalize(&q); return cson_object_value(pay); } /* ** Impl of /json/artifact. This basically just determines the type of ** an artifact and forwards the real work to another function. */ cson_value * json_page_artifact(){ cson_object * pay = NULL; char const * zName = NULL; char const * zType = NULL; char const * zUuid = NULL; cson_value * entry = NULL; Blob uuid = empty_blob; int rc; int rid = 0; ArtifactDispatchEntry const * dispatcher = &ArtifactDispatchList[0]; zName = json_find_option_cstr2("uuid", NULL, NULL, 2); if(!zName || !*zName) { json_set_err(FSL_JSON_E_MISSING_ARGS, "Missing 'uuid' argument."); return NULL; } if( validate16(zName, strlen(zName)) ){ if( db_exists("SELECT 1 FROM ticket WHERE tkt_uuid GLOB '%q*'", zName) ){ zType = "ticket"; goto handle_entry; } if( db_exists("SELECT 1 FROM tag WHERE tagname GLOB 'event-%q*'", zName) ){ zType = "tag"; goto handle_entry; } } blob_set(&uuid,zName); rc = name_to_uuid(&uuid,-1,"*"); if(1==rc){ g.json.resultCode = FSL_JSON_E_RESOURCE_NOT_FOUND; goto error; }else if(2==rc){ g.json.resultCode = FSL_JSON_E_AMBIGUOUS_UUID; goto error; } zUuid = blob_str(&uuid); rid = db_int(0, "SELECT rid FROM blob WHERE uuid=%Q", zUuid); if(0==rid){ g.json.resultCode = FSL_JSON_E_RESOURCE_NOT_FOUND; goto error; } if( db_exists("SELECT 1 FROM mlink WHERE mid=%d", rid) || db_exists("SELECT 1 FROM plink WHERE cid=%d", rid) || db_exists("SELECT 1 FROM plink WHERE pid=%d", rid)){ zType = "checkin"; goto handle_entry; }else if( db_exists("SELECT 1 FROM tagxref JOIN tag USING(tagid)" " WHERE rid=%d AND tagname LIKE 'wiki-%%'", rid) ){ zType = "wiki"; goto handle_entry; }else if( db_exists("SELECT 1 FROM tagxref JOIN tag USING(tagid)" " WHERE rid=%d AND tagname LIKE 'tkt-%%'", rid) ){ zType = "ticket"; goto handle_entry; }else if ( db_exists("SELECT 1 FROM mlink WHERE fid = %d", rid) ){ zType = "file"; goto handle_entry; }else{ g.json.resultCode = FSL_JSON_E_RESOURCE_NOT_FOUND; goto error; } error: assert( 0 != g.json.resultCode ); goto veryend; handle_entry: assert( (NULL != zType) && "Internal dispatching error." ); for( ; dispatcher->name; ++dispatcher ){ if(0!=strcmp(dispatcher->name, zType)){ continue; }else{ entry = (*dispatcher->func)(rid); break; } } if(!g.json.resultCode){ assert( NULL != entry ); assert( NULL != zType ); pay = cson_new_object(); cson_object_set( pay, "type", json_new_string(zType) ); /*cson_object_set( pay, "uuid", json_new_string(zUuid) );*/ cson_object_set( pay, "name", json_new_string(zName ? zName : zUuid) ); cson_object_set( pay, "rid", cson_value_new_integer(rid) ); if(entry){ cson_object_set(pay, "artifact", entry); } } veryend: blob_reset(&uuid); return cson_object_value(pay); } #endif /* FOSSIL_ENABLE_JSON */ |
Added src/json_branch.c.
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#ifdef FOSSIL_ENABLE_JSON /* ** Copyright (c) 2011 D. Richard Hipp ** ** This program is free software; you can redistribute it and/or ** modify it under the terms of the Simplified BSD License (also ** known as the "2-Clause License" or "FreeBSD License".) ** ** This program is distributed in the hope that it will be useful, ** but without any warranty; without even the implied warranty of ** merchantability or fitness for a particular purpose. ** ** Author contact information: ** drh@hwaci.com ** http://www.hwaci.com/drh/ ** */ #include "VERSION.h" #include "config.h" #include "json_branch.h" #if INTERFACE #include "json_detail.h" #endif static cson_value * json_branch_list(); static cson_value * json_branch_create(); /* ** Mapping of /json/branch/XXX commands/paths to callbacks. */ static const JsonPageDef JsonPageDefs_Branch[] = { {"create", json_branch_create, 0}, {"list", json_branch_list, 0}, {"new", json_branch_create, -1/* for compat with non-JSON branch command.*/}, /* Last entry MUST have a NULL name. */ {NULL,NULL,0} }; /* ** Implements the /json/branch family of pages/commands. Far from ** complete. ** */ cson_value * json_page_branch(){ return json_page_dispatch_helper(&JsonPageDefs_Branch[0]); } /* ** Impl for /json/branch/list ** ** ** CLI mode options: ** ** --range X | -r X, where X is one of (open,closed,all) ** (only the first letter is significant, default=open). ** -a (same as --range a) ** -c (same as --range c) ** ** HTTP mode options: ** ** "range" GET/POST.payload parameter. FIXME: currently we also use ** POST, but really want to restrict this to POST.payload. */ static cson_value * json_branch_list(){ cson_value * payV; cson_object * pay; cson_value * listV; cson_array * list; char const * range = NULL; int which = 0; char * sawConversionError = NULL; Stmt q; if( !g.perm.Read ){ json_set_err(FSL_JSON_E_DENIED, "Requires 'o' permissions."); return NULL; } payV = cson_value_new_object(); pay = cson_value_get_object(payV); listV = cson_value_new_array(); list = cson_value_get_array(listV); if(fossil_has_json()){ range = json_getenv_cstr("range"); } range = json_find_option_cstr("range",NULL,"r"); if((!range||!*range) && !g.isHTTP){ range = find_option("all","a",0); if(range && *range){ range = "a"; }else{ range = find_option("closed","c",0); if(range&&*range){ range = "c"; } |